A film depicting the hidden desires and contradictions in a schoolgirl's daily life. She constantly obeys her boyfriend, enduring stress from having her nipples played with without ever reaching orgasm. In an empty classroom, she is trained by a male masochist, thoroughly made to cum using toys and a penis, finally feeling relieved. She keeps the M man as her pet, forcing him to run errands and tormenting him at will, only to return to her obedient self with her boyfriend the next day. This work portrays the complex emotions of a schoolgirl and her relationship with the M man. This is the true essence of a schoolgirl's sexual activities!