Shou struggles to get along with his stepchild from his remarried husband. His son has become a recluse since Shou came into the house. Shou, neglected by her husband, indulges in an affair with an insurance salesman. One day, she discovers stolen photos of herself and missing underwear in her son's room. Furthermore, she is shown footage of the affair and blackmailed, ultimately raped. Shou falls into being a sex slave under her son's torture training…
