After discovering a serious work-related mistake made by her husband, his boss begins to cast a dark shadow over Mio's life. He forcefully rapes her, creating tension and secrecy within her marriage. The film depicts Mio desperately enduring relentless, obsessive sex. At a casual drinking session, the boss sexually gropes her right in front of her husband. Then, on their wedding anniversary, Mio is trained like a pet for her husband by the boss. The boss’s relentless assault continues, gradually drawing her body into his desires…