Haruna, who is assigned as a new teacher to a boys' school famous for its bad behavior and is working hard to interact with the students, falls in love with a serious male student, a rare sight at the school. However, one of the delinquent students finds a nude photo of Haruna on the student's cell phone... The next day, the delinquent group threatens Haruna, and the whole classroom erupts in calls to take off their clothes. Haruna is forced to teach the class completely naked in front of her beloved, and before she knows it, she is addicted to the pleasure of shame.