Eriko Kurata is a strict female principal who wields immense authority at the school, enforcing discipline with an iron hand. One day, she discovers a student named Shijo being bullied—a boy she had previously taken an interest in. After rescuing him, she notices he remains deeply troubled and withdrawn. Out of compassion, Eriko decides to comfort him through sexual service, hoping to heal his emotional wounds. However, their intimate act is secretly recorded by bullies who witnessed it. The footage leaks, and soon Eriko is blackmailed by both the bullies and her own colleagues, forced into degrading and humiliating acts. Eventually, the very student she tried to save—Shijo—begins to torment and manipulate her in turn, leading to a harrowing chain of abuse and degradation.