Stem cells, gene therapy, transplants, cloning... The very meaning of the word ‘humanity’ changes daily in the modern world, but there is a darker side to the evolution of mankind, a truth only a few brave souls are willing to face. There are monsters loose in the world. And they are the key to the future of our race. Each one-hour episode of Sanctuary follows the adventures of the beautiful and enigmatic Dr. Helen Magnus and her team at the Sanctuary as they track down, study and try to help the strange and often terrifying creatures that secretly populate our world.