One day, teacher Ai witnesses a student in her class being bullied and extorted for money. With a strong sense of justice, Ai tries to help the student, but at the student's home she is drugged, rendered unable to move, and raped. It was all the student's scheme. Photographed in embarrassing poses and left with no choice but to obey, Ai endures humiliations in the classroom that she could never have imagined…