The Donahues, a song and dance act, consist of husband and wife Terry and Molly, and their three children Steve, Katy, and Tim. The family's survival as a performing act and as a family is portrayed. The family's history as a vaudeville act is shown, with Terry and Molly performing under various names, including the Three Donahues, the Four Donahues, and the Five Donahues, featuring their children on stage since they were toddlers.

There's No Business Like Show Business
The lives of a family of four are turned upside down when their son's infatuation with a hat-check girl sparks a chain reaction that ultimately unravels their family bonds.