Sasaki Shigeru and Mansaku are father and son, living alone in a motherless household. Miwako, the wife of the Ikeda family who lives next door, is very kind to the couple, sharing the dinner she made in excess with them and bringing Mansaku home from school. One day, the father, Shigeru, sees a certain program and decides to apply. The program is a variety show where people swap wives! What if the beautiful Miwako next door came to his house? Shigeru wonders, but will it actually happen?