A female teacher troubled by delinquent students begins bondage exercises as a way to relieve stress, eventually becoming addicted to self-bondage at home. Due to her obsessive personality, she relentlessly pursues pleasure, deepening her fascination day by day. One day, she realizes too late that a student has discovered the rope marks in her house. As she panics and tries to make excuses, it's already too late. The delinquent student, intrigued by BDSM, identifies her as a masochist, leading to even worse events during a school trip. The teacher is trained by her student, screaming in lewd, crying agony as enema fluid is poured into her anus, suffering intense humiliation and helplessly defecating while choking back tears—an astonishing, cruel climax unfolds.