Mototsugu is the younger son of Akira Sakawa, a director of an advertising agency whose mother, Nobuko, is ill with cancer of the liver. His elder brother, Ichiro, works at the Bank of Japan whose wife, Masuko, is from a very high-class family. Mototsugu becomes disgusted with such strait-laced living and leaves home to marry Yoshiko, a blind masseuse, and they live in a small apartment near a pinball parlor where he works.

Tane, the lady proprietor of an inn for amorous couples, lives there with her three children. When her eldest daughter loses her fiancé due to the fact her mother is a mistress, her despair drives her to become a cabaret hostess.