Female teacher Nana gets doused with a bucket of water due to the carelessness of janitor Hanaoka. At that moment, the men's desires flared up in the classroom. Nana's erotic body is visible through her underwear and skin. A lustful student fucks Nana after school. When Hanaoka learns of this, he tries to protect his girlfriend Nana, but she is defeated and a new life begins. However, soon Hanaoka's true nature will be revealed...