Karen, an adult performer from Okinawa who has always dreamed of the north, creates her own unauthorized fantasy version of Susukino inside an adult school role-play. She maps out streets from South 3 to South 7 and turns classrooms and the audiovisual room into themed sex businesses: fantasy role-play, men's massage, oral service, an S&M club, and a topless bar. With sweet promises that motivation to study depends on her shops, she turns campus discipline into one long erotic temptation.