Kanae, whose husband works at a trading company, is always worried about her husband's lecturing and nastiness towards his subordinates, who sometimes invite him over for drinking parties... One day, Kanae feels sympathy for one of his subordinates, Yamashita, and when he approaches her while her husband is not looking, she ends up having sex with him... After that, whenever Yamashita comes to her house, he starts to seek out her body, hiding it from her boss, and Kanae has no choice but to give in to him.