Kind, caring, and beautiful, Touko is a veteran teacher who is immensely popular with her students. But she has a secret sexual fetish. She's a masochistic exhibitionist. She teaches in front of her students without panties and masturbates in the school toilets. Her desire to be humiliated escalates, and she finally begins exposing herself in public... One day, her student's father sees through her indecent behavior and forces her into a humiliating play. As she is violated outdoors, her masochistic desires become uncontrollable, and the perverted female teacher goes wild!