It's been a while since Rei and Taishi have had sex since their marriage. Four years into their marriage, they don't have any children. One day, after Rei comes home late for the first time, Taishi hires a private investigator to look into her activities. The report reveals that she's having an affair with her former boyfriend from college. Enraged, Taishi roughly embraces Rei, who just returned home late, and tries to overwrite her with his own sperm while forcefully extracting the other man's semen...