Stargate SG-1: The Complete Series

Colonel Jack O'Neill retired from the military a year ago. Prior to retirement he led an expedition through the Stargate an ancient portal which allows instantaneous travel to other galaxies. He is called back to duty by General Hammond when a group of aliens emerge from the Stargate kill the soldiers guarding it and kidnap a female guard. After seeing the aftermath of the alien attack and the strange bodies they left behind O'Neill confesses that he defied the order to destroy Abydos the world he visited via the Stargate. He reveals that Daniel Jackson the scientist who was thought to have died on that mission is alive and living on Abydos. It is also clear that these aliens are not from Abydos. O'Neill is reunited with his old comrades Kawalsky and Ferretti and joined by Capt. Samantha Carter an astrophysicist. SG-1 returns through the Stargate to Abydos. They discover that Jackson has taken an Abydan wife the beautiful Sha're and that Skaara the young Abydan boy O'Neill cherishes as a son has grown into a fine young man. They also see Jackson's latest discovery: a giant cartouche covered in hieroglyphics that seems to be a map of many Stargates throughout the galaxy. As they marvel however the aliens led by the handsome but evil Apophis are making use of a similar map. They emerge from the Stargate on Abydos and after a brief battle kidnap Sha're and Skaara. Ferretti who was wounded in the fire fight with the aliens has seen the hieroglyphic code that indicates the alien's destination. O'Neill and Jackson are determined to follow the aliens and to save their loved ones. With a troop of soldiers from earth in tow they track the aliens to the planet Chulak. There they discover that Sha're is now Apophis' queen; her body has been taken over by the hideous snake creatures known as Goa'ulds who rule this planet and collect life forms from around the galaxy to use as hosts. They know they can't save her but can they save themselves and Skaara before they're killed by the Goa'uld guards and before General Hammond sends a nuclear weapon through the Stargate to destroy the planet?

As the Goa'ulds splatter against the protective iris installed inside the Stargate the SG-1 team faces several problems close to home. Colonel Jack O'Neill wants to add a new member to the team: Teal'c an alien who risked his own skin to save O'Neill and his team on the other side of the Stargate. But General Hammond won't approve the appointment and O'Neill must watch as military intelligence treats Teal'c like a guinea pig. To make matters worse Kawalsky O'Neill's right-hand man has been having terrible headaches caused by an alien larvae that has attached itself to his brain. What they haven't discovered is that this larvae is trying to take over Kawalsky's body in an attempt to go back through the Stargate. With guidance from Teal'c the doctors operate to remove the alien but did they get it in time? Or is Kawalsky still under alien control ready to kill when the order comes?

On the planet Simarka the SG-1 team meets the Shavadai; a race of people similar to the ancient Mongols of Earth. These skilled horsemen and fierce warriors operate by a strict code which includes second-class status for women. Dr. Samantha Carter who takes a back seat to no man is threatened by death on her first encounter with the Shavadai chief Mughal and is only spared because she saved the life of his son Abu. Carter faces peril again when she is kidnapped by Abu who hopes to trade her for the hand of Nya the daughter of Mughal's powerful enemy Turghan. The deal goes bad and Carter ends up the unwilling property of the warrior chief. She is determined to escape but torn by pity for the lovelorn Nya and Abu. Carter arranges Nya's escape from Turghan's tyranny and is rescued from his clutches by O'Neill and the SG-1 team. But Carter's ordeal is not over yet; Turghan caught his daughter trying to elope and will stone her to death for her disloyalty unless Carter can defeat him in combat. In the circle of battle Carter must prove she is the equal of any man -- or die trying.

O'Neill and the SG-1 team head through the Stargate to a planet known as P3X797 and discover a world divided between a dark and light side with a population similarly split between the Touched and the Untouched. The Untouched who live on the bright side are humans a Bronze Age people who seem almost like the Minoan civilization of Earth. The Touched who live on the dark side are heavy-browed primitives with limited skills and the brutal instincts of animals. The findings would only be of academic interest but when the SG-1 team returns all but Teal'c and Jackson begin a startling transformation: they develop the heavy brows and act with the animal brutality of the Touched. Worse so do many others at Stargate's mountain headquarters including General Hammond. As order breaks down and the project is jeopardized Jackson and Teal'c head back through the Stargate in an attempt to discover the reason for this mysterious transformation. Is this a disease that can be cured or are O'Neill the General and the others all doomed to live out the rest of their lives in the Stone Age?

Colonel Jack O'Neill and the SG-1 team are sent through the Stargate after SG-9 is declared missing in action. When SG-1 arrives on the planet they learn that the primitive cave-dwelling inhabitants greeted SG-9 as gods because they carried guns and used powerful sunscreen which allowed them to survive the deadly UV rays. The problem is that SG-9 leader Capt. Jonas Hanson has taken advantage of this opportunity for power. Hanson now rules the planet without mercy forcing the inhabitants to rebuild the giant Gou'ald temples and condemning disbelievers to death by radiation exposure. It's clear that Hanson must be stopped but how do you stop a god? Dr. Samantha Carter who was once romantically involved with Hanson thinks she can reach him. O'Neill is prepared to fight his way into Hanson's compound to save Conner one of the surviving SG-9 team members. But Daniel Jackson and Teal'c may have the best solution; with the help of Jamala one of the planet's inhabitants they set out to show the people of the planet that Hanson's power comes from technology - - not divinity.

On Planet P3X562 the SG-1 team discovers a valley full of broken crystals. Alone O'Neill finds a whole crystal with blue light emanating from it. Upon touching it he is struck down and a duplicate O'Neill appears. The double returns home through the Stargate with the unsuspecting team. Once back the double seeks out O'Neill's estranged wife Sara and tries to find the couple's son Charlie who was killed years earlier. Meanwhile a revived O'Neill returns through the gate only to realize he's been replicated. Carter and Jackson have discovered that the crystals contain energy beings that can read minds mimic people and communicate. The beings tell of their tragic encounter with the Goa'ulds and explain that they cannot survive in the Earth's intense electromagnetic field which means that the O'Neill double is now highly unstable putting Sara and others in great danger. The real O'Neill and the SG-1 team find Sara and the double in a hospital emergency room. The double explains that he never meant to hurt O'Neill. He was trying to heal him when he realized that the greatest pain O'Neill had was not physical but emotional; grief from the loss of his son. In a final gesture the double does just that taking the form of Charlie and giving Sara and Jack something they never had: a chance to say good-bye to their son.

Under government pressure to discover superior technologies O'Neill and the team head to a planet Teal'c remembers which has creatures called Fenri that possess the power of invisibility. They arrive to discover a Goa'uld hunting party led by Apophis is already there tracking the Fenri. O'Neill's attempt at an ambush goes horribly wrong and the members of the SG-1 team are killed. They are revived along with Shak'l a Jaffa who was also killed in the battle by the Nox. The Nox are a small peaceful fairy-like people who occupy the planet previously thought to be uninhabited. The Nox can make things invisible - it is they who shield the A'kasha (a flying insect-like creature) from the sight of the hunters - and bring back the dead. But can they stand up to the deadly technology of the Goa'uld once Shak'l reveals their secret and location to Apophis? O'Neill and the team offer to defend the Nox against Apophis but the peaceful little people have their own solution far beyond the understanding of either Goa'ulds or the people of Earth.

O'Neill and the SG-1 team travel through the Stargate to Argos where they come across a young woman giving birth. After Daniel delivers the child the team is invited to a festival where they find a civilization of beautiful happy people who celebrate while the sun shines and mysteriously drop to sleep the minute that it sets. More mysteriously they seem to age very rapidly - a lifetime is 100 days - an effect that O'Neill unwittingly inherits when he is seduced by Kynthia a stunning Argosian woman. As O'Neill's hair turns grey and life races past the rest of the team return to base to try to discover a cure for whatever is making O'Neill and the Argosians grow old so fast. Dr. Samantha Carter discovers the culprit: nanocytes or microscopic robots that circulate in the blood stream apparently placed there as part of a cruel experiment by Pelops a Goa'uld whom the Argosians worship as a god. But the team can't figure out how to turn them off and unless they can O'Neill will soon be dead.

In search of allies in their battle against the Goa'ulds O'Neill and the SG-1 team travel to the planet Cimmeria - - home to the legendary Norse gods. But Cimmeria has long ago been declared off-limits to Goa'ulds and when the team emerges from the Stargate Teal'c who as a Jaffa carries an infant Goa'uld within him is trapped in a mysterious beam of light. When O'Neill tries to save him both men vanish transported to a mysterious underground labyrinth. The labyrinth is home to Unas a vicious creature that is the original Goa'uld host but it is also Thor's Hammer which is designed to kill Goa'ulds. As O'Neill and Teal'c fight for survival Daniel Jackson and Dr. Samantha Carter try to rescue them aided by Kendra a former Goa'uld host who survived her own journey through the labyrinth years earlier.

Daniel Jackson makes a remarkable discovery while going through film footage of Stargate experiments conducted in 1945. It seems that the post-war team led by Professor Langford succeeded in getting the Stargate to work and a young professor Ernest Littlefield actually traveled through the wormhole never to return. Daniel shares this information with the professor's daughter Catherine Langford who oversaw the Stargate project for years and who was supposed to marry Littlefield before he disappeared. Using computer-enhanced pictures as a guide the SG-1 team joined by Langford go in search of Littlefield. They find the professor now grown old as well as a remarkable room that seems to have been the meeting place of four alien civilizations. There's only one problem: the dial-home device on this Stargate is severely damaged and Langford and the SG-1 team may be trapped forever.

When Teal'c joined the SG-1 team he kept secret the family he left behind on Chulak for fear that it would make his new comrades doubt his loyalty. Now however his son Rya'c has reached the age at which he will receive his Gou'ald larva and Teal'c is determined to stop the process that would make his boy a servant to the Gou'alds. After much debate and a promise to return with a Gou'ald larva for study the team disguised as monks heads through the Stargate to Chulak only to discover that Teal'c's family has been declared outcasts. With help from Teal'c's mentor Bra-Tac they battle Jaffa warriors and priests before finding Rya'c and his mother Drey-Auc. The family reunion however is not as simple as Teal'c hoped; the boy needs the Gou'ald larva to survive. And the only one available is the one that is keeping Teal'c alive.

The SG-1 team returns from the planet Oannes in a panic - and without Daniel Jackson who was last seen being consumed by a column of flames. But as his comrades mourn him on Earth Daniel is a captive of an amphibious-humanoid creature known as Nem who is seeking information about his partner Omoroca who lived on Earth 4 000 years earlier. Daniel struggles to recall his Babylonian history and agrees to have his brain read by Nem's advanced and possibly deadly technology. Daniel discovers common ground with Nem - both have lost their true loves to the murderous Goa'uld - and the key to his freedom. Back on Earth the SG-1 team struggle with the strange feeling that Daniel isn't really dead. The team members use hypnosis to revisit the events leading up to Daniel's disappearance.

When Archeologists exploring a Mayan pyramid in Mexico find a sarcophagus covered in Egyptian hieroglyphics they accidentally release Hathor. Hathor is a Goa'uld who has taken on the persona of a powerful Egyptian goddess awoken from a sleep that has lasted a millennium. After dispensing with the scientists Hathor makes her way to the Stargate mountain facility dressed as a homeless woman. Once inside she uses her physical charms and a drug-like pink smoke to seduce the men and enlist them in her plan to take over the world - - using O'Neill as her first Jaffa. As the goddess cooks up thousands of Goa'uld larvae and prepares O'Neill to bear one it falls to Carter and the handful of women at the base to fight back against the powerful seductress. Aided by Teal'c who as a Jaffa is immune to her powers they prepare to face Hathor in a battle for the future of the planet.

The SG-1 team travels through the Stargate to planet P8X987 where another SG team has been making preparations to observe a black hole. But when they get there they discover that a strange disease has wiped out everyone on the planet. Everyone that is except a little girl named Cassandra. As O'Neill and Teal'c remain on the planet to observe the black hole Carter and Daniel return to Earth with the girl. Carter grows especially close to Cassandra and is shocked when she discovers that the chest pains Cassandra is experiencing are caused by a metallic device growing around the child's heart. Daniel and Carter ascertain that the Goa'uld planted the device as part of a scheme to destroy the Earth's Stargate. As the time bomb ticks down Carter is torn between her love for the little girl and her knowledge that the child is being used as a Trojan horse by the Gou'ald.

When O'Neill and the SG-1 team travel through the Stargate to P3X1279 Teal'c recognizes it immediately as Chartago home to the Bysra and one of the Goa'ulds favorite places to harvest humans for assimilation. Teal'c had come here when he was head Jaffa to Apophis; his visit is remembered by one of the Bysra Hanno who accuses Teal'c of killing his father. Teal'c is put on trial - the Bysra call it Cor-ai - but the trial proceeds far differently than a trial back home would. Hanno acts as both judge and jury and when Teal'c admits he killed his father he's found guilty and a death sentence is passed. While O'Neill and the rest of the team try to persuade Hanno that Teal'c has changed and is now the enemy of the Goa'uld the Jaffa seem resigned to his sentence of death.

O'Neill and the SG-1 team arrive on the planet Tollan to find a scene of chaos and death. A volcano is erupting spewing choking ash and burning lava and bodies litter the ground around the Stargate. The team gathers up a few survivors and returns through the gate to Earth. The Tollans however are not grateful for being rescued. Their leader Omoc dismisses human society as primitive refuses to answer any questions about his planet's highly advanced technology and demands to be relocated to a similarly advanced world. Narim another Tollan reveals the reason for Omoc's suspicion. Years earlier Omoc's father shared the Tollan technology with a civilization like Earth's setting off a war that destroyed the more primitive planet and destabilized Tollan. With military intelligence sniffing around and threatening to put the Tollans to work on weapons systems Earth seems to be heading down the same path. Having saved the Tollans from death the SG-1 team must risk court-martial to save them from slavery and to save Earth from self-destruction.

The Stargate malfunctions while Colonel Jack O'Neill and the SG-1 team are evacuating from a firefight on a hostile planet. As a result Teal'C and Daniel Jackson make it back to Stargate Command but O'Neill and Dr. Samantha Carter find themselves trapped near a Stargate in an icy crevasse on an unknown planet. O'Neill is badly hurt - broken leg internal injuries - so it falls to Dr. Carter to try to dig the nearby gate out of the ice and find a way to make it work. Meanwhile as technicians try to repair the home gate Teal'c and Daniel are trying to figure out what went wrong and where their comrades might be. They could be on any one of a million planets and if someone doesn't figure out which one soon Carter and O'Neill will face a frigid death.

O'Neill and the SG-1 team arrive on PX3989 only to be zapped by an electrical trap that renders them unconscious. When they awake they find themselves in an underground lab with Harlan a strange but apparently peaceful native of PX3989 who claims to be 11 000 years old and who says he has not only fixed their injuries but improved them. When they return to Earth over Harlan's objections the team members discover what he means. While they all feel like themselves they are all now machines that have been implanted with the consciousness of the SG-1 team members. Worse they will run out of power and die unless they return to PX3989. Upon their return they confront Harlan who as a robot himself is mystified by their demand that he put them back in their human bodies and sacrifice their immortality. Under pressure he takes them to meet themselves in hopes of achieving a compromise between man and machine.

While exploring an alien Stargate complex on P3R233 a world that appears to have been destroyed by the Goa'uld Daniel Jackson discovers a slab that when activated turns into a shimmering mirror. He touches the mirror and gets a mild jolt but thinks nothing of it until he returns through the Stargate. Then he finds himself in an alternate reality a place that looks like Earth but where nothing is quite as it was. The most distressing difference is that this world is under attack by the Goa'ulds who have wiped out half-a-billion people and are about to capture the Stargate Command. O'Neill faces-off against Teal'c who in this reality is still loyal to the Goa'uld and Daniel tries to escape through the Stargate with information that may save his world from the fate of this alternate reality.

Having escaped marauding Goa'ulds in another Earth reality Daniel Jackson warns that it is only a matter of time before they launch an attack in this one. But the Stargate program faces a more immediate threat - - this from Senator Kinsey powerful Chairman of the Appropriations Committee and the man who oversees Stargate's multi-billion dollar budget. Kinsey sees the program as a wasteful fat cat with dubious goals and he vows to shut it down. As he reviews the past missions with Hammond O'Neill and the SG-1 team he dismisses the danger presented by the Goa'uld despite warnings from Teal'c of their power. Even Daniel's desperate warning of an imminent attack won't sway the Senator who is determined to bury the gate and put the program out of business.

The Stargate is being shut down by the U.S. government despite Daniel's warning of an imminent Goa'uld attack on Earth. The SG-1 team armed to the teeth defy orders to make an unauthorized trip through the Stargate to what they believe to be the origin of the attack. They find themselves on a Goa'uld ship full of Jaffa warriors traveling through space at many times the speed of light. They also find that they're trapped there; the Stargate will no longer connect back to Earth. As Carter and Daniel wire the ship with explosives O'Neill and Teal'c discover that Skaara is aboard. Skaara was once the young Abydonian friend to O'Neill but now is the host body to Klorel son of Apophis. Is Skaara's human spirit still alive under that fierce exterior or has it been consumed by Klorel? The future of the SG-1 team and of Earth depend on the answer.

As a fleet of Goa'uld warships heads toward Earth threatening to destroy it the Stargate facility prepares for the worst sending the best and brightest of American society through the Stargate to a safe Alpha site. Meanwhile O'Neill and the SG-1 team use the Stargate to board a ship commanded by Apophis' (Peter Williams) son Klorel (Alexis Cruz). The SG-1 team is on a suicide mission planting explosives in an attempt to stop the attack. They are captured by Teal'c's Jaffa mentor Bra'Tac (Tony Amendola) who joins their fight hoping to overthrow Goa'uld domination of the Jaffa. Bra'Tac knows the weaknesses of the Goa'uld ship and reveals a plan to stop them. The plan means almost certain death for both the SG-1 team and Bra'Tac but they all realize that is is the only way to save the Earth and set the Jaffa free.

O'Neill and the SG-1 team are on a mission to Nasya hoping to rescue the survivors of a planet that has been attacked by the Goa'uld. During the rescue however Dr. Samantha Carter's (Amanda Tapping) body is taken over by a Goa'uld that was hiding in the body of a mortally injured Nasyan. Her fellow team members don't notice the change but when the team returns to Earth Carter's young friend Cassandra (Katie Stuart) recognizes the Goa'uld immediately. Cassandra tells O'Neill that Carter is confined to a cell and O'Neill bargains with the Goa'uld for Carter's life. The Goa'uld tells Teal'c that he is Jolinar of Malkshur one of the Tok-ra Goa'ulds a rebel group opposed to the bloodthirsty ways of the system lord. But he also reveals that he has been followed here by Ashrak an assassin trained in the ways of the Goa'uld. Unless the SG-1 team can stop him Ashrak will kill Jolinar taking Carter's life as well.

While exploring a seemingly insignificant planet O'Neill and the SG-1 team are approaced by a ragged figure who pleads for their help from a pursuer named Taldor. They try to defend him only to discover that the man is a fleeing murderer. Taldor means Justice and by aiding the man the SG-1 team becomes complicit in his crime. Over their protestations of innocence the team is sent through a Stargate to Hadante a penal world where brute strength and raw power rule. Strangely the most powerful person on Hadante seems to be Linea (Bonnie Bartlett) a diminutive woman who strikes fear into brutes such as Vindoor with her mysterious powers. SG-1 strikes a deal with Linea: if she will help power the Stargate using her cold fusion power source they will help her escape with them. It seems a fair trade but there's more to Linea than meets the eye.

O'Neill and the SG-1 team travel to P7J989 where they discover a beautiful garden and a dome full of strange metallic chambers each containing an unconscious person. As the team inspects the chambers they are trapped and knocked unconscious. They awaken to find they are reliving pivotal moments in their lives in the hope of changing the outcome. Teal'c joins O'Neill on a battlefield where the Colonel lost a patrol; Daniel and Carter witness the death of his parents in a freak accident. A shadowy figure called The Keeper (Dwight Schultz) steps forward and explains that they are part of a game that feeds memories into a virtual reality he has created for the amusement and edification of 'his residents' in the metallic chambers. He explains that they are there because he says the planet has been rendered uninhabitable because of the pollution on the planet. But The Keeper is lying when the SG-1 team threatens to reveal his deceit to the others he admits defeat. Or does he?

While exploring planet P3R 636 O'Neill and the SG-1 team come across what appears to be a troop of Jaffa warriors and ceremonial priests delivering Naquadah an element treasured by the Goa'uld through the Stargate. What catches Daniel Jackson's eye however is the beautiful Princess Shyla the melancholy daughter of the planet's ruler Pyrus the Godslayer. When she attempts suicide Daniel saves her life but in doing so he and the rest of the team are captured and forced to work in the Naqadah mines. When Daniel is injured in an escape attempt the princess brings him to the palace and nurses him back to health using a Goa'uld sarcophagus. As O'Neill and the rest of the team work as slaves in the mine Daniel attempts to negotiate their release. Princess Shyla explains to Daniel the secrets of the planet. She reveals how her father drove out the Goa'uld ruler and now rules the planet with an iron hand sending Naquadah through the gate in hopes of appeasing the Goa'uld. She explains that while Pyrus has lived for 700 years thanks to the rejuvenative powers of the sarcophagus he is now dying and she will succeed him. She wants Daniel as her King and she's willing to use the power of the sarcophagus to convince him to accept the throne.

O'Neill and the SG-1 team return to Cimmeria after learning that the Goa'uld have invaded the planet. The team feels responsible since on their previous visit they destroyed Thor's Hammer the planet's main instrument of defense agains the Goa'uld. The team makes some remarkable discoveries on the planet. Samantha Carter discovers that she has the power to use the Goa'uld ribbon device. It soon becomes clear that the SG-1 team need help to fight the massive enemy force lead by the vicious Goa'uld Heru-ur. Teal'c O'Neill and Olaf head to scout the Goa'uld encampment and soon find themselves face to face with the enemy. Meanwhile Daniel Jackson Samantha Carter and Gairwyn search the Hall of Thor's Might where they believe they might find weapons to defeat the Goa'uld. They find the hall where they are presented with a series of tests by a hologram of Thor the Asgard god who guards the planet. Can they pass the tests and find a way to defend the planet? And can they do it before Heru-ur's army wipes out the rest of the Cimmerians and the rest of the SG-1 team?

While exploring a now-dead planet O'Neill and the SG-1 team find an orb that sends out electromagnetic signals. They think it is a time capsule of some sort and are intrigued by its power source which seems to have lasted a millenia they bring it back through the Stargate. When Samantha Carter and Daniel Jackson begin their tests however the object begins to heat up and the team decides to send it back through the Stargate. The object however seems to have other plans. While it is brought to the Stargate it shoots bolts through the concrete walls floor and ceiling of the facility including one that pierces O'Neill's shoulder. Further investigation reveals that the object is sending out alien organism that is infecting people computers and the building itself. Attempts to destroy the orb only make it grow faster. As the computer screens go dark and the facilities self-destruct mechanism begins its countdown Carter suggests they let the organism take over O'Neill's body in the hope the orb will use him to communicate with them.

Teal'c's mentor Bra'tac arrives unexpectedly through the Stargate with shocking news: the Goa'uld Apophis survived the destruction of his ship and has now kidnapped Teal'c's son Rya'c. O'Neill and the rest of the SG-1 team agree to join Teal'c as he returns to Chulak to rescue Rya'c but when they arrive they find much has changed. Because Teal'c didn't return from Earth his wife Drey'auc assumed he was dead and married his old friend Fro'tak. To make matters worse Ray'c has been brainwashed by Apophis which causes him to denounce his father as a traitor and foil the team's attempts to rescue him. Fro'tak becomes jealous after seeing Teal'c and Drey'auc rekindle their marital flame. The team is almost caputred and Fro'tak attempts to betray them to Apophis forcing O'Neill to take drastic action. But Teal'c sees a glimmer of hope when Rya'c slips a hidden message into his denunciation of his father. Teal'c wants to rescue him and take him back to Earth and although O'Neill agrees he suspects Rya'c - or his controller Apophis - may be setting an elaborate and deadly trap.

Daniel Jackson and Teal'c travel back to Abydos as it has been a year since Daniel left to fulfill a promise he made to Sha're's father Kasuf. When they arrive Daniel learns that his wife whom he hasn't seen since she was taken by the Goa'uld is nine months pregnant. The father is Apophis who plans to use the baby as his new host. O'Neill and Carter are in Washington to receive a medal for their bravery and receive their own shocking news. O'Neill is approached by a reporter named Armin Selig who says he has the inside scoop on the Stargate program and is going to run the story. Carter is reunited with her father who tells her he has cancer. As Carter and O'Neill deal with these large issues Daniel and Teal'c try to find a way to get Sha're back to Earth before the child is born and the sleeping Goa'uld within her awakens. When the arrival of a ship carrying Apophis' enemy Heru-ur prevents them from returning through the Stargate Tea'lc devises a plan to use the rivalry between Apophis and Heru-ur to help them escape.

While exploring BP6-3Q1 O'Neill and the SG-1 team are attacked by giant insects. The team escapes through the Stargate but not before Teal'c is stung. When Teal'c returns to Earth a strange transformation begins as the insect virus transforms Teal'c's DNA into something like its own. The change baffles Dr. Samantha Carter and geneticist Dr. Richard Harlow and it terrifies Teal'c who makes O'Neill promise he'll stop the transformation. But Tea'lc's condition intrigues Colonel Maybourne who sees the potential for biological weapons in the insect venom. Maybourne uses his presidential mandate to take custody of TEal'c but the Jaffa escapes while being translated leaving behind his Goa'uld larvae. As Teal'c hides out on the mean streets of the city he is befriended by Ally a young homeless girl Oneill and the team return to BP6-3Q1 to capture the insect. While there they discover the terrible power of the insects: how they bypass normal breeding by genetically transforming their victims into their offspring. With time being of the essence the Stargate Command must devise a vaccine and keep the larval Goa'uld alive. Most important of all - they must find Teal'c before Maybourne does.

Samantha Carter has a vivid dream: she sees through the eyes of Jolinar the Tok'ra or rebel Gou'ald who briefly inhabited her body before dying. Although her father Jacob is dying of cancer Carter knows she must go on the mission with O'Neill and the rest of the SG-1 team to find the Tok'ra on planet P34-353J. Upon their arrival they meet a suspicious and heavily armed group of Tok'ra but as Carter reveals her knowledge relations begin to warm up. The team learns more about the Tok'ra - how they ususally only inhabit willing hosts and do not use the Goa'uld sarcophagus - and Carter learns more about the relationship between Martouf and Jolinar who were partners for nearly 100 years. There is even talk of an alliance but the trust is fragile and the outcome of the negotiations are uncertain.

The Tok'ra have turned down SG-1's request for an alliance against the Goa'uld because as Garshaw explains the earthlings don't offer enough rewards to justify a security breech. And the fact that none of the humans will act as host for Selmak a Tok'ra whose host is dying does little to build trust. However Samantha Carter has an idea. Her father Gen. Jacob Carter is dying of cancer. If he will become a host it will save both his life and that of Selmak. But when she and O'Neill return to the Stargate to propose the idea to her father the Goa'uld tipped off by a spy launch an attack on the Tok'ra. The Tok'ra have enough warning to relocate but by the time O'Neill Carther and her father return the attack is underway. The bonding of two beings as sick as Gen. Carter and Selmak would be difficult under the best of circumstances. With Goa'uld death gliders filling the sky it requires even greater risk and urgency.

The SG-11 team has not returned from its mission to planet PXY-887 where they recently discovered an element Trinium that is a hundred times lighter and stronger than steel. Instead the inhabitants of the planet have fired an arrow made of Trinium through the Stargate and into the shoulder of Jack O'Neill. With O'Neill in the infirmary the SG-1 team led by Samantha Carter heads through the Stargate to investigate and to negotiate a mining treaty with the inhabitants. SG-1 is knocked out on the arrival and when they awake they meet Tonané a plains spoken Coast Salish Indian who explains that the SG-11 team were taken by 'the spirits' - the same spirits who gave the valuable metal to his people. Carter and the others are skeptical as they address T'akya the wolf and Xe'ls the raven even after the SG-11 team mysteriously reappears. Negotiations with the Salish reach a stalemate and Tonané returns to Earth with SG-1 and SG-11 to look at alternative mining methods. But when Gen. Hammond tells Conner news of plans by N.I.D. to mine the planet whether the Indians agree or not strange things begin to happen as the spirits determined to protect the Salish reveal their true nature.

When a group posing as the SG-1 team steals the climate-controlling Touchstone from the planet Madrona the planet's weather deteriorates threatening inhabitants with imminent death unless the stone is recovered. Madrona's high priest Roham and his granddaughter Princess La-Moor blame the SG-1 team for the theft. The SG-1 team make a disturbing discovery: the secon Stargate on Earth which had been officially decommissioned was reactivated by high level orders and used to steal the Touchstone. Now the weather device is on Earth and being used to manipulate the world's climate. When Gen. Hammond discovers the whereabouts of the second Stargate the SG-1 team races to it determined to find the Touchstone before all of Madrona perishes and to discover the hidden agenda behind the Touchstone's theft.

Daniel and the rest of the SG-1 team travel to an ancient room that houses alien inscriptions in an attempt to decode alien languages discovered by a probe. When O'Neill peers through a viewer in the ancien room he is caught momentarily in its grasp and shortly after alien words begin appearing in his speech. Before long his entire brain is taken up with a superior knowledge virtuallly indecipherable to the rest of the team. Daniel is certain that O'Neill now possesses the knowledge of the Ancients the alien race who invented the Stargates but he realizes the knowledge is too complex for human minds and will likely cause O'Neill to lose his mind. In an attempt to save himself O'Neill must access his subconscious mind to discover ones with a greater knowledge than his own ones who may also have important knowledge about the destiny of mankind.

While attempting to save the members of SG-10 from a black hole on planet P3X-451 the SG-1 team activates the Stargate and exposes themselves to the hole's gravitational pull. Trying to break free the team shuts down the gate's power and in the ensuing explosions Teal'c and Daniel are badly injured. Even without power the black hole's gravity continues to draw the SGC closer to the swirling wormhole. With the intense gravity field warping the space/time continuum the SGC loses contact with the outside world and the Pentagon sends O'Neill's former mate Col. Cromwell to investigate. Cromwell is tormented with guilt for deserting O'Neill during a Soviet mission and volunteers to partner him in the attempt to save the SGC. Time slows to a near stand-still inside the SGC where only O'Neill and Cromwell are left. Carter scrambles for a solution before the SCG and then the Earth are torn apart by the black hole's gravitational tides.

When the SG-1 team stumble upon the chamber of former Goa'uld enemy Ma'chello they fall victim to his powerful body swapping invention. Ma'chello takes on Daniel's body and the young archeologist finds himself trapped in the body of an old and dying man. In Daniel's body Ma'chello flees the SGC and gets a taste of life on Earth for the first time while Daniel lies on his death bed in the hospital. In an attempt to help their friend O'Neill and Teal'c bring the invention to the SGC but accidentally trigger it and find themselves in each other's body. When Ma'chello is tracked down and returned to the SGC he reveals that the machine's process is irreversible.

Pursued by Goa'uld death rays former Goa'uld conqueror and sworn enemy of SG-1 Apophis throws himself at the mercy of the team and despite his past evil they grant him sanctuary. Apophis who shows signs of torture is slowly dying and promises all the knowledge of the Goa'uld in return for a new host body. When O'Neill rejects his offer Apophis reveals that he is pursued by an ancient and powerful Goa'uld named Sokar the original god of death. Conquered by Apophis in Egyptian times Sokar has come to wreak his revenge and will kill anything that stands between him and his ancien adversary. The team's Tok'ra ally Martouf tells SG-1 that unless Apophis is sent back to face his fate all those around him will be destroyed either by Sokar or the many Goa'uld who wish their former leader dead.

During a routine reconnaissance mission the UAV plane crashes into a cactus-like plant on a planet inhabited by an unusual life form. Sent to recover the plane the team discovers those living on the planet are friendly gentle and far simpler than their human counterparts. Shortly after the team's arrival aliens begin falling ill and before long a plague of illness sweeps the race. O'Neill and Daniel begin acting erratically and complain of headaches which disappear once they are back at the SGC. As the number of afflicted aliens grows it appears that the SG-1 team has unwittingly unleashed something that threatened the survival of this civilization.

A young boy (Jeff Gulka) gains entry to the SGC and tells the SG-1 team he has come with his mother a member of the invisible Reetou race. The boy who asks to be called Charlie after O'Neill's dead son announces that the Goa'uld destroyed his planet Reetalia and now Reetous rebels intend to kill all human beings. The rebels believe that by killing all potential hosts for the Goa'uld they will gradually eliminate the the Goa'uld themselves. His mother created Charlie to serve ans an intermediary between the Reetou and humans and to warn them of the coming rebel attack but due to his accelerated growth the boy's organs are now failing and unless he receives expert medical help he will die soon. The SG-1 team call Carter's father Jacob (Carmen Argenziano) a Tok'ra to help them. He brings a laser device which can make the Reetou visible and destroy them. But it may be too late. Thousands of Reetou are swarming outside the wormhole and an unknown number may have already gained entry into the SGC.

Through a solar flare the SG-1 team are propelled back in time to 1969 landing in a top military facility. Carrying a letter General Hammond gave her Carter (Amanda Tapping) is searched by a yount Lieutenant (Aaron Pearl) who is astonished by the letter's contents. As the team is transported for futher interrogations the Lieutenant helps them escape and tells them the letter appeared to be from him many years in the future. Desperate to find the Stargate so they can return to the present the team seeks out Catherine who they believe may know its location. Hitchhiking to see her in New York they are picked up by Michael (Alex Zahara) and Jenny (Amber Rothwell) two friendly flower children on their way to Woodstock. They immediately warm to the team's fugitive appearance. Carter discovers that Hammond's note includes the date of the next solar flare and they race to the Stargate before their chance of leaving the past is lost for good.

Awakening from what seems like cryogenic suspension O'Neill finds himself in a futuristic version of the SGC surrounded by unfamiliar faces. He is told by doctors he has been frozen for 79 years and the rest of the SG-1 team perished long ago. The doctors hook O'Neill to a device which turns his memories into holographs then question him for information about races able to defeat the Goa'uld. The doctors claim they need all the help they can get in their current war against the Goa'ulds. When O'Neill overhears the doctors speaking in Goa'uld voices he realizes he maybe part of an elaborate set up. He escapes and discovers the SGC is actually a replica built inside a Goa'uld stronghold and that in nearby rooms Daniel and Carter are undergoing similar treatments. Attempting to escape the three are blocked by Hathor who enraged by their refusal prepares to implant one of them with a larvae.

Trapped on Hathor's planet Capt. Samantha Carter and Dr. Daniel Jackson can only watch helplessly as Hathor implants Col. Jack O'Neill with a Goa'uld symbiote. Gen. Hammond sends Col. Makepeace and six SG units to rescue SG-1 but when the units are defeated Hammond decides to do the job himself. Unknown to Hammond Makepeace acting alone succeeds in rescuing Carter and Daniel but Hathor's army has created an energy barrier that blocks the SG personnel from reaching the stargate. Back in Hathor's facility a Tok'ra spy closes O'Neill in a cryogenic chamber to kill his Goa'uld symbiote ΓÇö a tactic that will unfortunately also kill O'Neill. Carter rescues her freezing teammate and they come face to face with the enraged queen Hathor. In the Jaffa city of Chulak Teal'c attempts to raise an army to help his friends and stumbles across the injured Bra'tac who has been left for dead by Apophis' Serpent Guards. Bra'tac leads Teal'c to an ancient Goa'uld death glider and they begin to forge a daring rescue plan.

Capt. Samantha Carter's father Jacob enlists the SG-1 team in his hunt for the ancient Goa'uld system lord Seth whom he believes is hiding on Earth. A computer search reveals that Seth has maintained power on Earth for thousands of years by hiding behind false religions. The SG-1 team traces him to a heavily armed compound in Washington state. Outside the compound SG-1 clashes with a team of action-happy ATF (Bureau of Alcohol Tobacco and Firearms) agents led by the adversarial Special Agent James Hamner. They also meet Levinson a frantic father who's desperate to rescue his son Tom from Seth's cult. Col. Jack O'Neill Carter and Dr. Daniel Jackson break into the compound. Within minutes however they fall victim to the biological agent that Seth uses to brainwash his followers into doing his bidding.

Asgard leader Thor tells Col. Jack O'Neill that the Goa'uld system lords plan to attack Earth. He offers his help in negotiating a peace treaty. Three system lords attend the summit: Yu Nirrti and Cronus ΓÇö the Goa'uld lord responsible for killing Teal'c's father. The three initially agree to the Asgardian peace proposal on the condition that Earth surrenders its stargate. When Teal'c and Cronus are discovered unconscious and both badly beaten Teal'c is blamed and the two remaining system lords vow to attack Earth as retribution. Despite Nirrti's claim that she tried the healing-hand technique on Cronus and it didn't work Maj. Samantha Carter (who just prior to this mission was promoted from captain) convinces Yu to use it and in so doing saves Cronus. Realizing that Nirrti orchestrated the beating to seize power Yu and Cronus turn their rage toward their former comrade giving Earth a temporary reprieve.

The SG-1 team discovers a room containing the corpses of a league of Goa'uld who challenged the system lords. One holds a tablet; after Dr. Daniel Jackson touches it he begins to hear voices and see nightmarish visions. Medical tests indicate Daniel is suffering from schizophrenia. Whatever is interfering with his mind however soon transfers to Teal'c ΓÇö with far more deadly consequences. As the Goa'uld parasite leaves Daniel's body Daniel hears the voice of the dead Ma'chello declaring death to the Goa'uld. Daniel realizes that he was infected by Ma'chello's Goa'uld-killing parasite a theory borne out by Teal'c's rapid deterioration. Believing the tablet holds the key to Teal'c's survival the team brings it to the lab. As they open the tablet though the parasites ooze into medical officer Dr. Janet Fraiser Maj. Samantha Carter and Col. Jack O'Neill. Carter proves immune but with parasites inside them Fraiser and O'Neill deteriorate rapidly. Gen. Hammond has no choice but to seal the lab off with the three inside.

In the pursuit of knowledge Col. Jack O'Neill Teal'c and Dr. Daniel Jackson travel to the planet Orban as part of an exchange program. Daniel and Teal'c remain on the planet Daniel to study an ancient mosaic pattern on the floor of their stargate room that he hopes will explain the origin of the Orbanian people; and Teal'c to prepare the Orbanians should they ever encounter the Goa'uld by sharing his knowledge with them. O'Neill travels back to Earth with a young Orbanian girl Merrin and her chaperone Kalan to present Stargate Command with a valuable Naquadah reactor. All are surprised when it is the young Merrin who volunteers to stay at SGC and teach Maj. Samantha Carter how to build such a complicated technical device. As Carter and O'Neill spend more time with Merrin they become aware that she is not a typical 11-year-old. She is incredibly knowledgeable but has no understanding of fun or play. O'Neill and the rest of SG-1 uncover the truth behind Merrin's intelligence and how it will affect her and the other children of Orban. O'Neill defies orders and sets out to change Merrin's fate by taking her off-base to show her the value of what her childhood could be like and what she has been missing.

Stargate Command is taken aback when an alternate-reality version of Samantha Carter and the deceased Maj. Kawalsky are found in a secured building in top-secret Area 51. To transport themselves to our present-day Earth they used the Quantum Mirror ( There But for the Grace of God ). When the alternate Dr. Carter and Maj. Kawalsky are taken to SGC for debriefing they can't believe how different everything is in this reality. Here Col. Jack O'Neill is alive and single whereas in their alternate reality he was married to civilian scientist Dr. Carter before his recent death at the hands of the Goa'uld. They're also stunned that Teal'c is an ally rather than an enemy this world's Maj. Kawalsky has been dead for several months and this Samantha Carter is a major who would be identical to her civilian alternate if not for her short hair. Dr. Carter begins to suffer from temporal distortion a side effect caused by travel through the quantum mirror. Maj. Carter determines that Dr. Carter and Maj. Kawalsky will die unless they are returned to their original reality. Unfortunately in their reality the Goa'uld are swarming through Stargate Command and returning home means certain death.SG-1 must use their present-day resources and knowledge to return with their new acquaintances and overthrow the Goa'uld.

SG-1 travels to planet PJ6-877 for a routine recon. Almost immediately after arriving they are snared in an invisible forcefield by alien bounty hunter Aris Boch. Aris takes them to his cargo ship which is completely invisible from the outside. He has come to this planet to hunt a Goa'uld named Kel'tar who is wanted by the evil system lord Sokar. He attempts to solicit help from SG-1 in exchange for their freedom ΓÇö then informs them that should they refuse to participate he will take them to Sokar. Apparently there are sizable bounties on the heads of Teal'c and Maj. Samantha Carter and a reasonable bounty on the head of Col. Jack O'Neill but Dr. Daniel Jackson could probably only be traded for a day's rations. After an unsuccessful escape attempt SG-1 agrees to help Aris Boch catch his Goa'uld prey. Carter remains with Aris at a safe distance from the cave in which Kel'tar is hiding while O'Neill Daniel and Teal'c go in for the retrieval. When Kel'tar is captured he informs SG-1 that he is not Goa'uld he is a Tok'ra named Korra. If handed over by Aris Sokar would torture Korra to gain information that would endanger many other Tok'ra. SG-1 and their new Tok'ra ally must find a means of escape or try against all odds to convince the cold-hearted bounty hunter to do the right thing. Unfortunately Aris Boch's survival is dependent on something only the Goa'uld can give him. In order to get it he must trade Korra's life for his own.

SG-1 arrives at a medieval village and frees Mary a young woman who has been left outside tied to a stake. Simon friar of the village and Mary's friend explains that Mary is a sacrifice for the demon that plagues their village. The leader called The Canon chose her when he mistook her illness for an evil possession. When the demon arrives and finds no sacrifice it promises to destroy the village the next day unless five humans are left as sacrifices. SG-1 recognizes this demon and plots to destroy it but The Canon pronounces SG-1 evil and condemns them to be sacrificed. SG-1 must convince Simon to go against everything he believes and set them free so that they can rid his village of its demon forever.

Upon exiting the stargate SG-1 finds itself in the midst of battle. A group of SG soldiers battles a Jaffa army. Believing the soldiers to be the missing-in-action SG-11 team Col. Jack O'Neill and the others provide assistance. Much to their surprise the mystery SG team turns their weapons against SG-1! SG-1 wakes up in the soldiers' training camp with headaches and no weapons. The camp's leader Capt. Rogers assumes them to be from a rival camp until he recognizes Teal'c as a Jaffa. Rogers presumes that SG-1 has been sent by the camp's long-gone Jaffa leaders to test their battle readiness. The captain explains that the soldiers' standing orders are to practice battle using non-lethal Earth weapons until the return of Apophis. O'Neill tells them Apophis is dead. The soldiers don't believe him and resume their war games. As O'Neill and the others try to figure out what to do the games take a disastrous turn when SG-1's confiscated and decidedly lethal weapons accidentally make it out onto the battlefield.

During a rescue of captured Abydonians including his father-in-law Kasuf Dr. Daniel Jackson sees his long-lost wife Sha're watching the activity from a nearby tent. He follows her inside where Sha're who is actually the Goa'uld Amaunet takes Daniel in the grip of a Goa'uld ribbon device. Teal'c enters the tent with his staff weapon as Daniel falls unconscious. Daniel awakens in the Stargate Command infirmary where Teal'c sadly admits he was forced to kill Sha're to save Daniel's life. Daniel refuses to believe this until he is shown Sha're's body. Distraught over his wife's death and angry at Teal'c for causing it Daniel pulls away from his friends and resigns from the Stargate program. When Sha're starts appearing to him in vivid dreams Daniel must overcome his grief if he is to understand her desperate message.

SG-1 travels to a planet whose inhabitants seem to be suffering from mass retrograde amnesia. They have no memory of their lives before the unknown event they call the Vorlix and they report that their elders and children are missing. The planet faces complete devastation unless the people's memories can be restored. The inhabitants introduce SG-1 to Ke'ra a brilliant and personable young woman who has come to be the leader of her people. She and Dr. Daniel Jackson develop a mutual attraction. Ke'ra returns to Earth with SG-1 in hopes that her existing research on the Vorlix might help them find a cure. But as the investigation progresses SG-1 begins to suspect that Ke'ra may not be who or what she appears.

The Tok'ra Martouf arrives at the SGC with troubling news: Maj. Samantha Carter's father Jacob and his Tok'ra symbiote Selmak have been captured by the evil Goa'uld system lord Sokar. Jacob/Selmak is imprisoned on a moon called Netu which Sokar has transformed to resemble the Biblical Hell. The Tok'ra believe that Sokar plans to launch an attack against the other system lords gaining full control for himself. Martouf will try to rescue Jacob/Selmak but his first priority is finding out how much Selmak knows about Sokar's plan. Unfortunately no one has ever escaped from Netu. No one except Jolinar and she never told anyone else how she did it. SG-1 and Martouf travel to Netu on a starship. En route Martouf uses Tok'ra technology to access any of Jolinar's memories that might still be in Carter's mind. However what Carter recalls are painful remembrances from her own past and dark secrets that Jolinar never wished for Martouf to know. Once they reach Netu Teal'c stays aboard the ship while the rest of SG-1 and Martouf search for Jacob/Selmak through the underground caverns of Netu ... but the unexpected appearance of an old foe foils SG-1's plan.

During an attempt to rescue Jacob Carter and his Tok'ra symbiote Selmak SG-1 and Martouf have been captured on the Hell-replica moon Netu by one of its denizens who is determined to use their information to overthrow the Goa'uld system lord Sokar. With the aid of Tok'ra memory technology and a hallucinogenic drug nicknamed the blood of Sokar each prisoner is forced to relive vivid painful memories. This time however they are unable to distinguish between memory and reality. Meanwhile an attack by Sokar's forces leaves Teal'c with no choice but to seek backup from the Tok'ra. They respond with orders to deliver a bomb that will destroy Netu and Teal'c's friends along with it.

En route to the infirmary after an extended mission SG-1 learns that part of Stargate Command has been sealed off because of a chemical leak. Soon afterward during their routine examinations medical officer Dr. Janet Fraiser injects each member of the team with a sedative rendering them unconscious. Teal'c is the first to awaken; he secretly observes Dr. Fraiser and Gen. Hammond talking with two aliens. The general orders Teal'c and Maj. Samantha Carter placed in holding cells. Feigning unconsciousness Teal'c waits until he and his escorts are away from the infirmary before overpowering the guards and waking Carter. Carter and Teal'c quickly realize that they cannot trust anyone in Stargate Command and must seek help from outside the base. During the escape one of them is captured. The other must rely on the one person they can't trust in order to save SGC and Earth from imminent invasion.

The Tollan Narim pays an unexpected visit to Stargate Command inviting the members of SG-1 to participate in a ritual known as Triad. Only when SG-1 shows up on the new Tollan homeworld do they learn that Triad is an ancient ceremony of justice and the person on trial is their old friend Skaara. The Goa'uld Klorel's death glider crash-landed on the Tollan planet. Klorel was injured which allowed the host personality Skaara to emerge and request amnesty. This Triad will determine which of the personalities will forever have control over the host body: the Goa'uld Klorel or Skaara. Dr. Daniel Jackson and Col. Jack O'Neill are asked to argue for Skaara's position while another Goa'uld named Zipacna will argue for Klorel's. As Daniel and O'Neill work on their arguments Maj. Samantha Carter and Teal'c grow suspicious that Zipacna's presence might indicate an ulterior motive. But when SG-1 brings its concerns to the Tollan leaders its protest puts Skaara in further danger of losing his identity forever.

SG-1 steps through the stargate on its way to a paradise planet and ends up at Stargate Command. Adding to their confusion is Gen. Hammond's assertion that the team was gone for 15 hours not the mere moment that the SG-1 team-members perceived. Medical officer Dr. Janet Fraiser's examinations of the team-members are inconclusive but an analysis of the MALP (Mobile Analytic Laboratory Probe) data reveals a brief initial image of an alien lab just before the paradise view. They theorize that the paradise image is a means to lure people to the planet. But for what reason? As they try to figure this out each member of the team begins to experience intense cravings. Fraiser soon figures out what is causing the cravings: a microscopic implant in each SG-1 member's brain. The team is relieved of duty and isolated until Fraiser can find a way to remove the implants. Soon SG-1 is hearing and seeing the image of a man who identifies himself as Urgo. His presence is generated by the implants in their heads; only SG-1 can see and hear him. Though Urgo claims he only wants to record new experiences SG-1 begins to suspect he has another more nefarious purpose.

Col. Jack O'Neill and the rest of SG-1 have established ties with a small village on the planet Edora and its leader Laira with whom O'Neill shares a mutual and quiet attraction. Everyone gathers to watch the annual meteor shower referred to by the natives as fire rain. At first it's a pleasant light show but an extra-large shooting star prompts Maj. Samantha Carter and Dr. Daniel Jackson to conduct further research. Their results indicate that Edora travels through an asteroid belt every year but every 150 years or so the orbit hits a particularly dense section of debris. Those meteors strike the planet's surface to cataclysmic effect and apparently this is one of those years. SG-1's evacuation of the villagers is all but complete when Laira discovers her son is missing. O'Neill rushes off to assist her ordering the rest of SG-1 to return to base. Carter and Teal'c barely make it out in time before a large meteor hits the Edora stargate burying it and trapping O'Neill and Laira on the distant planet. Both SG-1 and the Edorans are stunned by the loss of their beloved leaders but SG-1 isn't prepared to accept this tragedy as final just yet.

SG-1 travels to Tollana to negotiate a trade. Col. Jack O'Neill becomes extremely annoyed when the Tollans refuse to cooperate due to their fear that any weaponry given to Earth would more likely be used on itself than to protect against the Goa'uld. In an act that shocks the rest of his team O'Neill steals a Tollan device as they are departing back to Earth. Upon hearing of Col. O'Neill's deed an outraged Gen. Hammond relieves O'Neill of his command. When the Tollans pay a visit and announce that they intend to break all ties with Earth because of O'Neill's crime Hammond has no choice but to offer O'Neill early retirement. Col. Maybourne having learned of O'Neill's indiscretion pays him a visit at home to make an interesting offer: Join a rogue stargate team under Maybourne's command that steals alien devices for Earth.

The SG-1 team travels to the planet Bedrosia where unknown to them the planet's two cultures have been at war over their opposed beliefs regarding the stargate. Upon their arrival SG-1 is met by the curious Nyan a scientist. Nyan explains to them that their arrival through the stargate proves that the beliefs of his rival culture the Optricians are true and that humans were brought to this planet by aliens through a gateway. His culture the Bedrosians believe that human life evolved without a gateway and was created by their god Nefertum. The team's arrival is soon detected by a group of Bedrosian soldiers and their leader Rigar. Col. Jack O'Neill Maj. Samantha Carter and Dr. Daniel Jackson are captured while Teal'c and Nyan narrowly escape. During his escape Teal'c is blinded. Rigar cages his three prisoners and interrogates them as to how they arrived on his planet. He believes that they are Optrician spies; they insist that they traveled here via the stargate. Rather than face the possibility that his people's entire belief system is wrong Rigar chooses to destroy all evidence including the SG-1 team. Though blinded Teal'c with Nyan's help must outwit the Bedrosians before Rigar can execute his plan and Teal'c's comrades.

Bra'tac accompanied by his battered Jaffa apprentice arrives at Stargate Command pleading for medical assistance. He announces that Chulak the home planet to himself and Teal'c has been brutally attacked by Apophis and he goes on to explain that it was as though Apophis was looking for something. Dr. Daniel Jackson deduces that the something had to be Harsesis the child Apophis fathered with Sha're/Amaunet. This forbidden child would contain all the knowledge of the Goa'uld and if he were to fall into the wrong hands could be the Goa'uld's undoing. Using the combined knowledge of Bra'tac Daniel and the available computer analysis SG-1 decides the most likely planet on which Harsesis would take refuge is Kheb a place from Jaffa and Goa'uld legend. Bra'tac and SG-1 travel to the planet in search of Harsesis. Realizing that Apophis could easily come to the same conclusion about Kheb the SG-1 team knows it must hurry to find the child before Apophis does.

Dr. Daniel Jackson becomes intrigued when the video transmission from the MALP (Mobile Analytic Laboratory Probe) reveals a huge Mayan pyramid with a glowing crystal skull in its center. He tells the rest of SG-1 and Gen. Hammond that the skull appears to be identical to one that his grandfather Nicholas Ballard found in Belize in 1971. He goes on to explain that his grandfather claimed that the skull possessed a power to teleport people to a place inhabited by aliens. After the academic community shunned Nicholas because of his seemingly ridiculous claims he never recovered. The team travels to the planet to investigate. Daniel approaches the crystal skull and is drawn to stare into its eyes. Meanwhile the cavern housing the skull begins to emit high levels of radiation. The team starts to evacuate but Daniel is entranced by the skull. Several moments later Daniel's body undergoes a phase shift and becomes invisible. Col. Jack O'Neill Maj. Samantha Carter and Teal'c must flee the lethal radiation leaving behind the invisible Daniel. Teal'c being somewhat protected from the radiation's effects by his symbiote returns to the planet to look for Daniel. When he can't see him he acquires the skull and returns to Stargate Command unaware that he has Daniel in tow. SG-1 solicits the help of Daniel's grandfather whose failure at proving his Crystal Skull theory has landed him in a psychiatric institution. They bring Nicholas Ballard back to Stargate Command in the hope that he can unlock the secrets of the skull and bring Daniel home.

While preparing for a week of leave Col. Jack O'Neill is engulfed in a white glow and disappears. Maj. Samantha Carter immediately recognizes that O'Neill has been transported away by the Asgard. O'Neill materializes a little disoriented on Thor's ship. He begins to hear a strange sound and moments later is faced with hundreds of menacing-looking metallic bugs. He freezes as they swarm past him. O'Neill heads in the direction the bugs came from and finds a very weak Thor. Thor tells O'Neill that he is dying and directs him to a control panel for further information because he is too weak to continue explaining what has happened. O'Neill learns that these bugs called Replicators are artificial organisms that have overtaken Thor's ship and have directed it toward Earth. The effects of the Replicators reaching Earth would be devastating. O'Neill appears back in the briefing room of Stargate Command in the form of a hologram. He informs Gen. Hammond and the rest of SG-1 of the situation. He orders them to gather a large amount of explosives that he will transport up. The team of course wants to be transported up as well but O'Neill orders them not to come. O'Neill can't believe his eyes when the explosives arrive with SG-1 in tow. They have little time to formulate a plan to outwit the Replicators and destroy the ship before it reaches Earth hopefully finding a way to save themselves in the process. But as time runs out the only answer seems to be a kamikaze-style sacrifice of the ship by crashing it into the sea ΓÇö a tactic that will spell certain doom for the SG-1 team trapped on board...

SG-1 returns to Stargate Command with news that Earth has been saved from the Replicators ΓÇö only to learn that one of the deadly creatures was not destroyed. After crashing into the ocean aboard the ship of Asgard leader Thor the Replicator bug found its way into a Russian submarine where it killed the entire crew and continued to rapidly replicate. Col. Jack O'Neill suggests the sub be towed out to sea and nuked but the Pentagon feels that such an act could cause a serious situation with the Russian government. Instead O'Neill and Teal'c lead a small heavily armed team aboard the sub in the hope that the Replicators can be eliminated by sheer firepower. Maj. Samantha Carter is taken to the Asgard's home planet Cimmeria which is on the verge of total destruction by the Replicators. Thor believes that Carter's human knowledge might hold the key that will enable the Asgard to defeat the Replicators once and for all.

Stargate Command is contacted by Alar a representative of the planet Euronda. His people are under attack and in need of help. Gen. Hammond sends SG-1 on a humanitarian mission to deliver food and medical supplies. The team arrives to find a civilization devastated by war ΓÇö and a leader desperate to make a deal. In exchange for the heavy water Euronda needs to sustain its defensive fields Alar is prepared to offer advanced Eurondan technology to Earth. Col. Jack O'Neill quickly agrees to the trade. Dr. Daniel Jackson however is suspicious that the Eurondans have not been completely honest about their agenda and he sets out to discover their true motives.

Anise a new Tok'ra representative to Earth approaches Stargate Command for help in testing some mysterious armband devices discovered amid the ruins of a distant planet. Anise believes the devices could be a powerful weapon in their war against the Goa'uld. Because symbiotes seem to render the devices ineffective she requires human test subjects to prove her theory. Col. Jack O'Neill Maj. Samantha Carter and Dr. Daniel Jackson volunteer. They are outfitted with armbands and within a short time begin to demonstrate incredible strength and speed. Dr. Fraiser becomes concerned however when medical tests suggest that the devices might be endangering their lives. Gen. Hammond orders the armbands removed ΓÇö only to discover that the devices will not come off. Anise sees an opportunity and suggests that SG-1 now outfitted with the armbands be sent to destroy a new ship being built by system lord Apophis. The general flatly refuses and orders SG-1 to remain on the base. Unfortunately Anise isn't taking no for an answer. SG-1 its judgment clouded by the alien devices' influence defies Hammond's order and sets off on what could be a suicide mission.

SG-1 responds to an incoming wormhole with their ally Bra'tac's signal. Instead of Bra'tac they greet Shan'auc who tells them that she has come on behalf of Bra'tac. Teal'c goes to Shan'auc and it is immediately evident to all that the two share chemistry and history. Shan'auc claims to have discovered a way to communicate with her symbiote and it in turn has shared memories with her. These memories she believes could be the means to defeat the Goa'uld. Shan'auc claims that through their communications she has convinced her symbiote that the Goa'uld are evil. The symbiote is prepared to tell all it knows to the Tok'ra. Teal'c is skeptical of Shan'auc's claim ΓÇö until he himself shares a memory with his symbiote. The Tok'ra agree that Shan'auc's symbiote is of great value and they find a willing host for it. Will the symbiote continue to tell its secrets and offer a method to defeat the Goa'uld or has it cleverly deceived Shan'auc SG-1 and the Tok'ra into letting it inside their defenses?

During a meeting with the Tok'ra high council Maj. Graham of Stargate Command goes berserk firing uncontrollably upon the Tok'ra before taking his own life. SG-1 is stunned to discover that Graham was a Zatarc the victim of Goa'uld mind-control technology. According to Anise its victims are subconsciously programmed to kill their recollection of the procedure covered by false memories. Anyone who has come into contact with the Goa'uld could well be a Zatarc and wholly unaware of the fact. Through the use of an experimental testing device designed by the Tok'ra Anise sets out to determine who at Stargate Command might have been programmed. The test proves successful in uncovering a second Zatarc Lt. Astor a former teammate of Graham's who also goes berserk shooting up Stargate Command before turning her weapon on herself. Subsequent testing then uncovers false memories in two more members of the Stargate program: Col. Jack O'Neill and Maj. Samantha Carter.

While exploring planet P4X-639 the SG-1 team meets Malikai a human explorer from another world who shares Dr. Daniel Jackson's interest in an alien computer covered in a strange Latin-like script. As solar flares flash from the red sun overhead Malikai warns Daniel that the geomagnetic disturbance may be dangerous to the SG-1 team and tells him to leave. When Daniel ignores him Malikai zaps him with a weapon and begins to program the alien computer. Maj. Samantha Carter and Teal'c rush to Daniel's aid and are caught with Malikai in a mysterious blue light. Suddenly they find themselves back at Stargate Command ten hours earlier preparing to head off on the mission from which they've just returned. And then it happens again. And again. And again. As Col. Jack O'Neill returns to eat the same plate of Froot Loops over and over again he realizes that SG-1 is caught in a time loop and that only he and Teal'c retain their memories through each ten-hour cycle. It's up to them to decode the message on the mysterious machine and figure out a way to break the loop.

When the stargate won't open trapping teams offworld the SG-1 team investigates and learns that the Russians have their own stargate apparently recovered from the sea after an Asgard ship crashed on Earth. The Russian stargate is locked open maintaining a perpetual wormhole that defies explanation. At the request of Russian scientist Dr. Svetlana Markov the SG-1 team is dispatched to the Russian stargate facility where they make a shocking discovery: All the soldiers and scientists are dead and the stargate remains locked open connected to a water-covered planet. Svetlana explains that the Russians had retrieved a sample of the water and found it has amazing properties including the ability to emit significant levels of energy. That same water however seems to have disabled the drone leaving it inoperable and sending transmissions that are keeping the stargate open. Dr. Daniel Jackson Maj. Samantha Carter and Dr. Markov travel through the wormhole in a miniature submarine in an attempt to recover the drone. The water brings the sub to a halt and begins to crush it leaving the team unable to return through the stargate. Back at the Russian facility Col. Jack O'Neill and Teal'c make their own shocking discovery: Inside a freezer is the frozen body of Col. Harry Maybourne an SG-1 turncoat who apparently has been advising the Russians. As Maybourne begins to thaw he comes back to life spewing out gallons of water and a terrified warning. This may look like water he says but it's alive and it's playing for keeps.

While conducting an archeological dig on planet P3X-888 Dr. Daniel Jackson makes a remarkable discovery: a primordial Goa'uld symbiote an ancient predatory version of SG-1's parasitical enemies. Before he can bring back his sample however his team is attacked by an Unas. One team member is killed and Daniel is dragged off into the wilderness by the giant primitive creature. Learning of Daniel's disappearance Col. Jack O'Neill leads a rescue mission to the planet. Upon his arrival he discovers that SG-11 has been almost wiped out only Hawkins survived and the planet's water supply is teeming with Goa'uld symbiotes. While O'Neill and Teal'c struggle with the possibility that one of their men might have been inhabited by a Goa'uld Daniel is dragged further into the wilderness by his captor. Gradually he begins to understand a few words of the creature's language. The Unas a juvenile whose name seems to be Chaka saves Daniel's life when he's attacked by a symbiote. As the rescue team struggles to catch up however the question remains: Has Daniel become the Unas' newest friend? Or is he simply being brought home as dinner?

Thanks to SG-1 a civilization known as the Enkarans have been transplanted from a Goa'uld slave planet to a safer more hospitable world. Soon after the Enkarans settle in however problems arise. One of their villages is attacked by a mysterious ship that appears to pose a threat even more formidable than that of the Goa'uld. SG-1 investigates and discovers that the mystery ship has no hostile intent it is merely terraforming the planet in order to make it habitable for the Gadmeer a long-dormant alien species. Lotan a biomechanical liaison created by the Gadmeer ship explains that once the terraforming procedure has begun it cannot be halted. To do so would mean extinction for the Gadmeer. On the other hand a completion of the terraforming process will mean certain death for the Enkarans. SG-1 must find a solution to this ethical dilemma or face the extinction of an entire species.

SG-1 awakens in a mysterious underground complex with no memory of their previous lives. In fact they seem to possess a whole new set of memories. No longer Col. Jack O'Neill Maj. Samantha Carter Dr. Daniel Jackson and Teal'c they are Jonah Therra Carlin and Tor laborers doomed to a dreary existence working the mines beneath an ice-covered planet. Back at Stargate Command meanwhile Gen. Hammond faces the possibility that SG-1 has perished on the planet's icy surface an outcome he refuses to accept. As the general tries to unravel the team's mysterious disappearance the members of SG-1 grasp at fleeting memories of their former lives memories that are not just the keys to their freedom but to their very survival.

Stargate Command is contacted by a rambling individual who claims to possess full knowledge of a host of government conspiracies from the Kennedy cover-up to CIA-sanctioned microwave harassment of Libertarian candidates. He sounds like a crackpot someone hardly worthy of their attention until he mentions the stargate. Gen. Hammond wants to play it safe. They need to check this guy out. Col. Jack O'Neill meets with the mystery caller a nebbishy fellow named Martin Lloyd who insists he is an alien and in possession of a spaceship (whose location slips his mind at the moment). O'Neill is ready to dismiss Martin as a harmless nut and head back to Cheyenne Mountain. Then a series of strange occurrences begin to suggest that maybe just maybe there could be some truth to Martin's story....

A test of the X-301 an experimental spacecraft adapted from two Goa'uld Death Gliders goes awry sending Col. Jack O'Neill and Teal'c hurtling out of Earth's orbit. As the X-301 streaks through space at a million miles per hour Stargate Command struggles to find a way to retrieve it. After an attempt to alter the spacecraft's course fails things look grim. Dr. Daniel Jackson seeks the help of offworld allies. He learns that the Tok'ra have a ship capable of reaching O'Neill and Teal'c but it is on a covert mission in Goa'uld-controlled territory. With time ticking down and the lives of their comrades hanging in the balance Daniel and Maj. Samantha Carter must locate the Tok'ra ship intercept the X-301 and pull off a daring rescue.

When Dr. Daniel Jackson's old archeology professor Dr. Jordan dies in a mysterious lab explosion Daniel pays a return visit to his old academic stomping grounds. As Daniel reacquaints himself with his former colleagues including his former girlfriend Sarah Gardner Jordan's research assistant he begins to suspect Jordan's death might not have been an accident. Daniel discovers that one of the items the professor was studying an ancient Egyptian jar contains a perfectly preserved Goa'uld symbiote. Apparently a crack in the vessel compromised the sedative solution within killing the creature. But further investigation reveals that a second jar might have existed. With a Goa'uld apparently stalking the campus and the local community abuzz with talk of an ancient curse Daniel must unravel the mystery before it's too late.

While visiting Chulak to gather support for a Jaffa rebellion Teal'c is captured by the Goa'uld. The rest of SG-1 unaware of his fate are dispatched to thwart a burgeoning alliance between Apophis and Heru'ur. But when they arrive at the neutral location chosen for the meeting - an ancient minefield floating in space - they discover that Heru'ur has brought along a gift to seal the deal: a battered but defiant Teal'c. SG-1 is torn. Do they try to rescue Teal'c? Or as Jacob Carter argues does the success of their mission outweigh the life of their friend?

When Gen. Hammond announces he is stepping down as head of Stargate Command Col. Jack O'Neill suspects that there is more to Hammond's decision than he is letting on. O'Neill is right; as he discovers the National Intelligence Department (NID) the quasi-governmental agency that among other things runs the classified Area 51 alien-research facility was behind the change of command. Fed up with the general's inability to acquire alien technology through whatever means necessary it pressured him into resigning. When Hammond's replacement the hawkish Gen. Bauer breaks up SG-1 and assigns Maj. Samantha Carter the task of building a planet-killing Naquadah bomb O'Neill decides to take on the NID. However O'Neill's only hope of restoring Stargate Command to its proper condition rests in the hands of a most unlikely ally: the traitorous Col. Maybourne.

It's 2010 and a lot has happened in ten years. The Goa'uld have been defeated and diseases such as cancer have been wiped out. Earth's saviors are an alien race known as the Aschen. Their advanced technology has not only ensured the planet's safety but it has won them the respect and friendship of all humanity. In spite of vast medical advancements however Maj. Samantha Carter and her husband Joe are unable to conceive a child. The Aschen doctors insist that Carter is fine but Dr. Fraiser's tests reveal something very different: The Aschen have been lying all along. Carter's investigation reveals an insidious plot to wipe out the human race through a process of slow attrition. Dealing with this insidious alien threat seems virtually impossible. The Aschen have become entrenched in Earth society. They hold all the reins of power. Challenging them would mean certain defeat. Finally SG-1 comes to realize that there is still hope - ten years in the past.

SG-1 is called to Abydos to investigate a strange phenomenon: a whirling sandstorm that seems to whisper Dr. Daniel Jackson's name. When they confront the twisting tempest it dissolves to reveal a young boy who introduces himself as Shifu the Harsesis. Shifu is brought back to Stargate Command where he undergoes a series of tests. The tests reveal that Shifu is physically normal but it is apparent to all that the young boy is wise beyond his years. Possessing the genetic memory of the Goa'uld he undoubtedly has the potential to become a powerful weapon against the system lords. Faced with this prospect the Harsesis child sets out to teach Daniel a lesson by imbuing him with the sought-after genetic memories and launching him on a spiritual journey. Ultimately Daniel must face a difficult challenge. Will he use his newfound knowledge to change the world for the better? Or will he allow this knowledge to change him for the worse?

One member of an SG unit has committed suicide and three others including Dr. Daniel Jackson are near death. Their condition is a mystery but the answer could well lie in a strange offworld temple. Col. Jack O'Neill Maj. Samantha Carter and Teal'c check out the site and discover a room with a mesmerizing light display. They conclude that the temple was at one point a Goa'uld pleasure palace. As their investigation progresses they come to realize that the temple is directly affecting their brains' physiologies ΓÇö delivering euphoric highs while they are on its premises and debilitating lows of withdrawal when they attempt to leave. Trapped they must find a way to break this otherworldly addiction. A young man who is seemingly unaffected by the strange environment might hold the key to their salvation.

During a visit to the Air Force Academy Maj. Samantha Carter makes the acquaintance of Jennifer Hailey a promising young cadet with a rebellious streak. Carter sees great potential in her but Jennifer seems determined to sabotage her future with the Air Force. She is fiercely independent opinionated and resentful of Carter to whom she is constantly being compared. On the other hand she is brilliant and Carter recognizes that given time Jennifer will prove to be a formidable asset to Stargate Command. Eventually Carter decides to show Jennifer exactly what she can look forward to if she stays the course by bringing her through the stargate. They visit an offworld research base where Col. Jack O'Neill and Teal'c are on security detail babysitting a group of ungrateful scientists. The seemingly routine excursion takes a deadly turn when the team is attacked by alien life-forms composed of pure energy. Trapped and cut off from the stargate SG-1 must make a desperate gamble to reach safety. (Note: Appearing as himself is Gen. Michael E. Ryan who retired Oct. 1 2001 as Chief of Staff of the U.S. Air Force. The general a science-fiction fan said he agreed to guest-star on Stargate SG-1 because The ideas that come out of science fiction are often more science than fiction. )

Stargate Command is infected by an alien probe that uploads its program into the base computers where it accesses sensitive data on Stargate program and its personnel. The virus program is detected and apparently deleted from the mainframe. Unknown to all however the entity's program has downloaded itself into the MALP (Mobile Analytic Laboratory Probe) room where it continues to thrive building itself a new body in order to contain the immense volume of data it has purloined. When SG-1 discovers the entity Col. Jack O'Neill wants to destroy it but Maj. Samantha Carter and Dr. Daniel Jackson feel that they should attempt to communicate with it first. Carter tries only to be overcome by a blast of energy. She is rushed to safety while O'Neill shuts down the entity presumably killing it for good this time. However the rest of SG-1 soon learns that the entity is far from dead. In fact it now exists in a new vessel one capable of storing even greater volumes of data: Carter's body. With the base under siege and the alien entity poised to overwhelm them all O'Neill and company are confronted with a dire prospect: In order to save Stargate Command they might have to sacrifice one of their own.

SG-1 returns to Juna formerly known as PX3-989 a planet they or rather robot duplicates of them helped free from Goa'uld enslavement. Once with SG-1's assistance the people of Juna were able to rebel against the forces of the Goa'uld system lord Heru'ur and win their freedom. But now the natives face the vengeful system lord Cronos. SG-1 is prepared to lead the planet's inhabitants against him but the people are not eager to trust SG-1 who had told them that they would be safe from the Goa'uld if they buried their stargate. They did as they were told and the Goa'uld simply returned in starships. Col. Jack O'Neill and the real SG-1 team must gain the natives' confidence before they can win the battle against Cronos. Fortunately most of the SG-1 robots have survived and might be of help on this doubly difficult mission.

SG-1 pays a visit to the Tok'ra homeworld. They arrive at Vorash on Cronos' mothership one of the spoils they claimed following their recent battle with him. At a meeting with Vorash's High Council it is revealed that SG-1 intends to lend the Tok'ra the enormous ship in order to help facilitate the Tok'ra's move to a new planet. Tanith is beside himself. Why wasn't he made aware of this plan? Teal'c informs him that he could not be trusted because he is after all a spy for the Goa'uld system lord Apophis. The Tok'ra has known all along. An enraged Tanith is taken away. The Tok'ra begins to move items up to the mothership. Preparations are underway for the extraction ceremony that will remove Tanith's Goa'uld symbiote. But amid all the activity Tanith escapes his cell and flees to the planet's desert surface. A search operation is mounted but no trace of him is found. Then the Tok'ra receives word: Tanith must have gotten a message out to Apophis who has assembled his fleet and is headed for Vorash. Maj. Samantha Carter and Jacob devise a plan that if successful could deal Apophis a crippling blow. They will 'gate the Tok'ra to another planet then load the stargate onto the mothership and leave Vorash. Once in position they will dial the address of the black-hole planet and then jettison the gate into the sun. Given proper timing this will cause the sun to go nova and destroy Apophis' fleet. Everything goes according to plan. They launch the black-hole stargate toward the sun and prepare to flee. Suddenly a Goa'uld ship decloaks and fires crippling them. Their weapons systems are disabled. Their hyperdrive is inoperative and Apophis is closing rapidly. More important the countdown has begun on a blast that will annihilate the entire solar system....

After losing Teal'c to Apophis (in the previous episode Exodus) O'Neill Carter Daniel and Jacob find themselves aboard Cronus' ship stranded in a remote part of the galaxy.

Teal'c's body has been saved from death on Apophis' ship but his mind is still loyal to his Goa'uld lord. Jaffa Master Bra'tac arrives at SGC to assist SG-1 in de-programming Teal'c.

While investigating ancient ruins on a distant planet SG-1 finds a huge alien device that Carter believes could be a weapon of incredible power.

While under fire on an alien world Carter Daniel and Teal'c return through the Stargate and report to General Hammond that Col. O'Neill stayed behind to protect the wounded Lt. Tyler.

After an unexpectedly rough ride through the Stargate SG-1 emerges on an alien world known as K'Tau. There they find a peaceful agrarian people still worshipping the old Norse gods evidence that this is a protected planet of the Asgard.

Cassandra the sole survivor of planet Hanka (episode Singularity) has been adopted by Dr. Fraiser and has been living with her for several years. But during a 16th birthday celebration a kiss causes electricity to surge from Cassandra's body.

Since befriending the Unas known as Chaka (episode The First Ones) Daniel had placed surveillance cameras on the Unas planet so that he could study the ways of these aliens.

When SG-1 explores the entrance of an ancient step pyramid on a remote world they are surprised to discover a package of Russian cigarettes.

SG-1 travels to the planet of Tollana to attend the funeral of their old acquaintance Chancellor Omoc ( Enigma ).

SG-1 returns from an off-world mission proudly announcing to General Hammond that through an intermediate race they have met a highly advanced alien race that's willing to form an alliance with Earth.

A Russian transport vehicle is ambushed and its valuable cargo a captured Jaffa is taken by force. At nearly the same time Major Carter is ambushed while getting into her car and abducted by mysterious men dressed in black.

An alien ship is spotted heading toward Earth and from its unique energy signature SG-1 determines that it is related to the pod found in Montana the year prior: Marty the alien's pod (episode Point of No Return ).

At a secret training facility a young group of cadets are put through their paces by a tough taskmaster: Colonel Jack O'Neill.

An off-world mishap causes an SGC-bound wormhole to prematurely disengage apparently trapping TealΓÇÖc on another planet. However when an attempt is made to dial back out the computers flag an unidentified error .

The Tok'ra has learned of a planned meeting of System Lords at a highly-defended space station in neutral territory. Seeing this as a perfect opportunity to cripple the Goa'uld power base the Tok'ra enlists the help of SG-1.

When the Vorash system's sun goes supernova the explosion propels both SG-1 and system lord Apophis' ships more than four million light-years from Earth.

When an asteroid is detected on a collision course with Earth SG-1 is dispatched to deal with the impending calamity.

Word has spread throughout Chulak and beyond. A formidable warriors now leads the Jaffa rebellion. The former First Prime to the late Goa'uld Imhotep his name is Kytano and already his followers' number in the hundreds.

A dormant android is discovered on a barren planet and transported back to Earth for study. At the SGC it is placed in a secure environment and activated.

Colonel O'Neill must enlist the aid of a couple of convicted felons in a bid to save a planet from the Goa'uld.

Daniel Jackson returns from an off-world diplomatic mission stricken with radiation poisoning and accused of sabotage by the host government.

SG-1 must mount a rescue mission on an inhospitable planet. Their goal: to save Heimdall an Asguard scientist and secure an underground laboratory before they fall into the hands of Anubis.

In this sixth season premiere Jonas (Corin Nemec) unable to return to Kelowna is eager to finish what the missing Dr. Jackson started. He and O'Neill (Richard Dean Anderson) are introduced to the X-302 the first human-built spacecraft capable of interstellar travel. Meanwhile the Stargate mysteriously malfunctions and Carter (Amanda Tapping) informs O'Neill that it could explode and destroy all life on Earth. Redemption Pt. 1 ends with the fate of Earth in SG-1's hands and no apparent way to avert the impending catastrophe.

Carter (Amanda Tapping) estimates that the Stargate can only withstand the attack for another 54 hours. Teal'c (Christopher Judge) and his son Ryac decide to seek out and destroy the weapon that has transformed the gate into a time bomb. Meanwhile Jonas (Corin Nemec) saves the day by devising a plan to explode the Stargate seconds after O'Neill (Richard Dean Anderson) passes through the hyperspace window. SG-1 acquires a new Stargate from the Russians trading plans for the ill-fated X-302. As a reward for helping save the planet Jonas becomes a full-fledged member of SG-1.

Carter (Amanda Tapping) and an SG team board an apparently abandoned Gou'ald mothership and are ambushed. With its drive controls disabled by Anubis' evil plot the ship plummets through the atmosphere and crashes into the Pacific Ocean. When Carter removes a matrix of crystals from the computer core the self-destruct mechanism activates giving the team 17 minutes to escape. With the launch systems jammed Jonas (Corin Nemec) saves the day and the crewmembers are jettisoned to safety just as the mothership explodes.

When woman is found frozen in the ice near an Antarctic research station the SG-1 team is sent to investigate. The three scientists who found the woman - Michaels Osbourne and Dr. Woods - believe she is thousands of years old. Tissue tests show that unlike normal human cells which suffer irreparable damage when frozen the woman's cells are perfectly intact. Aiyana as Michaels has named her is defrosted and slowly comes to life. EEG's indicate that Aiyana may be an example of advanced human evolution with cells that have evolved to withstand sub-zero temperatures. Carter theorizes that her races may have evolved long modern day humans. Michael's contracts an incurable virus from Aiyana who seems immune to its effects. Osbourne falls ill. Then Dr. Woods gets lost in an Antarctic blizzard forcing Teal'c and O'Neill set out on a rescue mission. Teal'c and O'Neill find the doctor nearly frozen and haul him back to the base dome for treatment. As they desperately try to save his life Aiyana steps forward and heals Woods with her bare hands. After curing Osbourne Michaels and Carter Aiyana collapses in exhaustion. With her immune system weakened by the stress of all that healing Aiyana succumbs to the virus as well. O'Neill begins to show symptoms but Aiyana dies before she can help him. Back at SGC a Tok'ra named Thoran informs the team that O'Neill will die unless he accepts a symbiote. O'Neill is reluctant but Carter assures him that the symbiote will only stay until he is cured and the Tok'ra can find a new host. When Carter mentions that the symbiote has important information acquired during a recent mission before the untimely death of its host O'Neill agrees to have the procedure.