Poppo, a teenage girl, is raped by four boys on the roof of a seven-story apartment building. She asks them to kill her, but they mock her and leave. Tsukio, a teenage boy, has been watching the rape passively. Over the course of a day and a night, Poppo and Tsukio begin a relationship, telling each other of their troubled past and philosophizing about their fate. Poppo describes an earlier rapes shown in flashback. In a color flashback, Tsukio tells of his own recent sexual abuse at the hands of a neighboring foursome, all of whom he has stabbed to death. Poppo repeatedly asks Tsukio to kill her, but he refuses.