Riley has dreams. Not the usual kind, but dreams and nightmares of death, destruction, and the extermination of the human race. Naturally, her parents worry about her, her psychologist can't understand her, her social life is a wreck, and to top it off, she starts to see a boy and girl in the dreams trying to communicate. And when this pair starts to appear in real life and tell her she's the catalyst to the end of the Earth , something has to be wrong with her life.