Sophie Leonard, singer of "hot mamma" songs in a New York nightclub, gives notice that she is to retire when her daughter, Beth, returns from a European education. Beth, who is unaware of her mother's true profession, arrives ahead of schedule in a limousine with Jean Gilmore, a school companion and the sister of Freddie Gilmore, and is shocked at her mother's modest accommodation. Sophie is disappointed that Beth is unable to stay for dinner and reprimands her for going to wild parties with Freddie. Sophie confides to Jim that though she hates the cafe life, she will resume her job at the honky tonk. Out of spite Freddie takes Beth to the club, and aghast, she renounces her mother and moves to a hotel. But as the result of Jim's intervention, Freddie is persuaded to ask Sophie's permission to marry Beth, and he convinces Beth of her unfair and cruel treatment of her mother. To Beth's surprise, Sophie realizes Freddie's worth and agrees to their plans, and a year later, Sophie is a grandmother.