A new semester has begun, and a male teacher is in charge of a new class. While being teased by his students, an innocent female student (Momo) stares at him. Momo, who she thought was serious, turns out to be a hidden problem child who repeatedly seduces her. It doesn't just end at her school, but also at her home. Gradually, the male teacher becomes fascinated by Momo and loses his sense of self...