Nanako, a female teacher, decides to tutor a student who refuses to go to school after consulting with her husband. However, the student has no intention of studying. When her husband goes on a business trip, a large group of students take over her house and rape her as they please. For three days while her husband is away... the students rape her violently over and over again, and a pleasure she has never felt before penetrates Nanako's body. She will never be able to go back to the way she was before.