Kaori is a full-time housewife living with her husband. In contrast to Kaori, Kyoko, the mother of the Fujita family who lives next door, is single-handedly raising her two sons, Masato and Kazuaki. One day, Kyoko says she will be away from home for a while. Upon hearing this, Kaori ends up taking care of her sons at her house, but... The next day, Masato and Kazuaki come to Kaori's house. As she watches the well-behaved couple, Kaori remembers something Kyoko said: "You two are virgins and only have wet dreams."