In 1921 vaudeville performer Joe Moran announces the birth of a son; but after the advent of talking pictures in 1928, vaudeville fails. His son Mickey Moran writes songs, and Patsy Barton sings "Good Morning." Mickey sells the song for $100. He gives Patsy his pin and kisses her. Mickey learns that his parents Joe and Florrie are going on the road without the children, and he disagrees. Patsy and Molly Moran sing "You Are My Lucky Star" and "Broadway Rhythm," but Joe says no to their going. So Mickey proposes the kids put on a show, and Don Brice sings "Babes in Arms" as they march and make a bonfire. Joe dismisses Mickey.