Karin's husband suddenly comes home with his boss. Karin can't hide her confusion, but her husband has been sent to buy a drink, leaving the two of them alone. Karin tries to resist, but her boss holds her down and touches her body. Even when she tries to escape, her husband's future becomes a shield against her. Karin is forced to give in, and ends up spending a forbidden night with her husband's boss in the holy matrimonial chamber...