Tortured by daily bullying, student Yamada confides in his teacher, Rei Hayami, who pleads with him to take photos of her naked body to help uncover the truth. Desperate to help, he agrees, but the pictures fall into the hands of delinquent students. As a result, Yamada is violently assaulted in front of his classmates and later subjected to gang rape during class with a vibrator secretly inserted. Powerless to resist, Rei is forced into a life of sexual slavery, becoming the cumdump for the entire delinquent gang.