A schoolteacher gets a phone call regarding one of her female students. It seems that the young girl has been accused of prostitution, and requests help from her teacher. The young girl's situation brings to mind some dark incidents from the teacher's past that she is still trying to deal with.

On a rainy night, the lights in the windows of the apartment complex go out one by one. Chiaki Onda (Junko Miyashita) was waiting for her husband, Hajime (Akira Hanagami), who came home late tonight. Dinner is cold and the children are already asleep. A rift had already formed between Chiaki and Hajime, and sex was nothing more than a means of fulfilling Hajime's sexual desires, and there was no joy in it. An attraction to her classmate's driver awakens...