Ryo, a female teacher who is strict with her students to avoid being ridiculed. A colleague named Ichijo, who respects her strength, secretly takes photos of her. However, when Ichijo accidentally finds out, he becomes desperate and pushes her down. Ryo, whose weakness is gradually seized, continues to be humiliated in school. At first, Ryo reluctantly follows the humiliating training at work, but her body slowly changes...