Oto, with her bright smile, is a popular girl throughout the school. One day, she's called to the gym storage room by a janitor who offers to help her with something. However, when she arrives, she finds her homeroom teacher waiting there. Both the janitor and the teacher turn out to be stalkers who have their eyes set on Oto. Despite being forced into sex by her teacher, Oto, who was experiencing it for the first time, finds herself drawn to him. As a result, a twisted relationship develops between her, the teacher, and the janitor...
