Yoko, a married woman suffering from her husband's abuse, Kazue, a sympathetic nurse, and Natsumi, a high school student betrayed by her lover teacher. The three of them met for a terrible cause, inspired by the crime of a mysterious whore who seduces men on a crowded train, they seduce a man on a train to molest, and then let the police on the wrong track with a hint that this is the case of that mysterious whore....