One day, Mitsu hears a rumor that one of her teachers is soliciting prostitutes, and decides to uncover the truth by calling him and setting a trap. A few days later, she confronts the teacher in the classroom—but the friends she trusted turn against her, siding with the teacher, and she is surrounded and raped by the three of them. Overcome with rage, Mitsu tries to fight back, but the teacher holds a secret weapon to control her. Forced to strip naked in front of her classmates, she is then subjected to a relentless, humiliating series of 20 consecutive creampies!