Mio attends a flower arrangement class. She has a good relationship with her husband and lives a fulfilling life. However, Kurihara, the instructor at the flower arrangement class, has had evil feelings for her for a long time and finally takes action. He gives her private lessons, tying her up and raping her, saying that it is to exorcise her evil thoughts. Since then, Kurihara has raped Mio countless times. Eventually, the training play escalates, and Mio's feelings gradually change...