If Teacher Thao is the name mentioned most on the Vietnamese campus for promiscuity, then in Japan, that title must go to Kamihata - a high school teacher. But there is a difference between these two characters, Teacher Thao has a vague relationship with students while the character in our film has a relationship with the janitor. Since applying for the cleaning job at the school, the janitor has always been eyeing her with a wicked thought in his mind that he must possess her body. The final opportunity has come, as the school is almost empty, he used a trick to force her to have sex with him, hesitant but also excited, she could only move slightly to show resistance. After that time, their relationship became closer as they met each evening in a secluded area to perfect their illicit affair.