Strong-willed and tomboyish gyaru schoolgirl Luna freely bullies male students, making them run errands and physically assaulting them. Growing furious at her behavior, the male students gradually begin taking action with powerful backing. Classmates ambush her on dark streets and punish her with rape, while a teacher suspects her of compensated dating and corners her using the threat of expulsion. As humiliation scenes unfold even in the classroom, Luna is driven further into despair, culminating in a series of consecutive creampie scenes carried out under the guise of "sound educational discipline" on orders from the mastermind behind it all.