A physical education teacher, Ichika, is caught in a sudden downpour during an outdoor class. Soaked, Ichika's clothes reveal her voluptuous body, but further misfortune awaits her. On the way home on a crowded train, Ichika becomes the target of a vile molester who plays with her plump body. Unable to ask for help, the people around her gradually disappear, and she is raped by the molester. But her tragedy doesn't end there; it is about to happen inside her workplace, the school...