This gripping story combines a touch of fantasy with a great deal of realism, as it gollows the adventures of seven teenagers. When a nuclear accident threatens Quebec, they escape into an underground network of caves where they learn not only how to survive, but, thanks to their leader Ariane's unique powers and special courage, they discover a new independence. When they finally emerge weeks later, the special friendship and love they have developed help them face the ordeals they encounter in a new and violent world.