Sato Mayumi is a housewife who has been married to Hideaki, a salesman in a home selling company, for 13 years. Her daughter is accepted into a middle school, however, the family lacks money to pay for her tuition fees. Mayumi then decided to start working again to help pay the fees.
One day, Ayako and her husband Nasuda Taro, a teach at the middle school, come to view houses in Hideaki'scompany. There, Hideaki see Ayako and becomes attracted to her.