Flow

Three adolescents at camp convince a naive girl they can cure her "curse" (really her first period) if she does everything they say. Ten years later, they find themselves the target of an actual curse that mirrors the torment they inflicted upon her.

When blood began to run down Dara Lund's legs at summer camp, she thought she was dying. Homeschooled by her conservative and protective father after her freespirited mom's mysterious death, Dara has no way of knowing her bunkmates' claims that ...