Okuyama is a stocker at the supermarket who has no luck with women. His life is thrown upside down when his sister Noriko unexpectedly moves into his house. Okuyama is overcome with lustful thoughts for her, but she regards him simply as a brother.

The lovely Reiko has taken a new teaching job at a creepy old high school. She is an extremely attractive woman and the young students in her class have fallen for her. One night, after tennis practice, she is brutally assaulted in the locker room shower by a man with a stocking over his face. Left on ...