One day, Jun, a new teacher, visits the home of Hiroshi, a student in his class who refuses to come to school. Hiroshi had previously caused problems at school, and the school had given up on him, but he came to make a home visit despite the objections of his fellow teachers. However, as soon as Hiroshi welcomes Jun, he gives him tea laced with a sedative he made himself and overpowers him. In the middle of the act, Jun's father, Koji, and his henchman, Kai, appear and gang-rape Jun...