Chisato's husband indulges in drinking and gambling, and ends up going wild at home. Chisato tries to talk to her brother-in-law, but her husband gets angry and becomes violent. While caring for his injured brother-in-law, they both become horny and engage in erotic acts. Their relationship continues and the two get close to each other. However, her brother-in-law learns a secret about Chisato, who is behaving strangely.
