Rui is a good wife living a happy life with her husband, Koji, who works at a major bank. One day, Kudo, the president of a construction company, visits Koji to negotiate a loan directly. Naturally, Koji rejects Kudo, but Kudo flies into a rage, attacks Rui, and gangbangs her. He films the act and uses it to blackmail Rui and Koji, and the couple's hell continues... Eventually, Rui transforms into a masochistic slave who seeks out cocks on her own...