Looking for excitement, Coraline ventures through a mysterious door into a world that is similar, yet disturbingly different from her own, where she must challenge a gruesome entity in order to save herself, her parents, and the souls of three others.

When shy sixteen-year-old Helen Hamilton starts having vivid dreams about three ancient, hideous women and suddenly tries to kill a new student at her Nantucket high school, she discovers that she is playing out some version of an old tale involving Helen of Troy, the Three Furies, and a mythic battle.