My son has been married but he doesn't work and just plays around instead. Even when I try to find him a job, he quits right away. His wife Yūho-san is such a well-matched, beautiful woman considering her lazy husband. Since I have some assets, I help them out financially with their living expenses. One day, they came over to stay with us. And then, naturally, my son and his wife left me alone with Yūho-san...

息子は結婚しているにもかかわらず仕事をせずに遊んでいる。仕事先を紹介してもすぐに辞めてしまう。嫁の由歩さんは、こんな息子には不釣り合いのよく出来た奥さんだ。私には資産があり、そんな息子夫婦のために生活費を援助している。そんなある日、息子夫婦が泊まりに来た。そして私と由歩さんは自然な成り行きで…。