One day, Sakura, a teacher, and her fiancé and fellow teacher Kameda visit the home of Yugo, a student who refuses to come to school in their class. They make a home visit despite the objections of their fellow teachers. However, as soon as Yugo welcomes Sakura, he gives Sakura and Kameda tea laced with sleeping pills, and pins Sakura down in front of Kameda. In the middle of the act, his father Oshima, a yakuza, and his thug subordinate appear, and the three of them gang-rape Sakura...