Mizuhara Sana has become the PTA president at T Private Academy, where her son attends. Her family has made substantial donations to the school, causing the administration to hesitate when addressing any issues involving her. One day, her son Kenichi injures a classmate by shoving cleaning equipment into his backside. However, due to the family's financial influence, the school chooses to ignore the incident. As a result, the bullied students bring along delinquent friends and storm a PTA meeting, ambushing Mizuhara Sana. They spike her with an aphrodisiac and prepare to take revenge through her anus, leading to a brutal double penetration assault filled with humiliation and rape.