The innocent husband witnessed his wife having an affair without knowing anything. A typical Japanese movie is about a housewife who is devoted to her husband but she also has a secret that she can't tell him. In other words, she secretly sold sex in her husband's company. Every time her husband goes on a business trip, she and her lover secretly have sex with each other. Even if she serves customers right next to her husband when he is drinking. Her clients range from her husband's boss to her husband's subordinates, neighborhood students, and often have free sex with her neighbors. Thanks to this job, she was able to earn a decent income to support her husband.