When the Nakata family's mother passed away, her son Kyo was unable to accept his mother's death. One day, his father remarried and he began living with his new mother, Mio. Kyo told Mio that if she wanted to be a part of the family she had to do as he said, and he aggressively demanded sex with her. Mio resisted, but he forced himself on her. From that day on, the son's actions escalated, but the father turned a blind eye. Before long, the father conspired with his son and began training Mio. A twisted life that will never end.