Reiko, a housewife who has been married for 15 years, lives in an apartment in the city with her office worker husband. - Mr. Ikeda's house, which lives in the next room, seems to be a so-called "father-and-son family" family environment...One day, by chance, I come to Mr. Ikeda's house in the next room to serve as his "surrogate wife" and help with the housework. - Reiko decides to go. - The beauty and bulges of a neighborly married woman who cares and loves beauty arouses unscrupulous feelings in both father and son.