Reiko is a divorced woman who became a teacher, yet her heart remains empty and she feels deep physical loneliness. When she tries to help a student who comes to her for protection from delinquents, she falls into their trap. They break into her home, rape her, and record everything on video. Then their abuse begins. Even during class, she is forced into vibrator games and subjected to lewd extracurricular "lessons" in front of numerous students, gradually descending into a life of sexual slavery. This video captures every moment of her suffering and humiliation as she is broken down completely.