A group of young mutants--humans with a genetic variation that gives them superpowers and makes them feared by the population at large--begin training at a school for heroes. Their studies are interrupted when they must rescue one of their number from a mad scientist who can enter others' dreams. A group of young mutants--humans with a genetic variation that gives them superpowers and makes them feared by the population at large--begin training at a school for heroes. Their studies are interrupted when they must rescue one of their number from a mad scientist who can enter others' dreams. A group of young mutants--humans with a genetic variation that gives them superpowers and makes them feared by the population at large--begin training at a school for heroes. Their studies are interrupted when they must rescue one of their number from a mad scientist who can enter others' dreams. A group of young mutants--humans with a genetic variation that gives them superpowers and makes them feared by the population at large--begin training at a school for heroes. Their studies are interrupted when they must rescue one of their number from a mad scientist who can enter others' dreams.