The Callistos are off on more blastastic adventures! Miles is given a chance to captain the Stellosphere and is immediately put to the test when disaster strikes! Gadfly steals the Galactech Globe forcing the Callistos to pursue him to his hidden home world. And when Miles and his friends enroll in a new space station school, they must help Blodger overcome his first day fears. With the help of his family, the Cosmic Explorers and his Galactech upgrades, Miles is ready for whatever the universe has to offer!