Airline hostess Ann Parker is fired for being undignified when she sang to calm the passengers during a storm. Mike Connors, publicity man for Frankie Carle's orchestra, invites her to try out as the band's vocalist since the regular singer, Mary Lou, had just quit the band on the eve of an engagement at a swanky New York night club. Encouraged by her boyfriend, Steve Roberts, Ann lands the job and assumes the name of "Mary Lou", a trademark almost for Frankie Carle singers. But the departed Mary Lou shows up and threatens to sue if she is not rehired. Ann returns to her former job. Meanwhile, Steve locates the woman who was the original Mary Lou with the band, and urges Mike to keep the current Mary Lou off the bandstand until he can return with Ann.
| Actor | Role |
|---|---|
 Robert LowerySteve Roberts | Steve Roberts |
 Joan BartonAnn Parker, aka Mary Lou | Ann Parker, aka Mary Lou |
 Glenda FarrellWinnie Winford | Winnie Winford |
 Frank JenksMike Connors | Mike Connors |
 Thelma WhiteEve Summers | Eve Summers |
 Abigail AdamsFirst Mary Lou | First Mary Lou |
 Chester CluteCheever Chesney | Cheever Chesney |
 Emmett VoganMurray Harris | Murray Harris |
 Pierre WatkinAirline President | Airline President |
 Charles JordanMortimer Cripps | Mortimer Cripps |
| FFrankie CarleBand Leader Frankie Carle (as Frankie Carle and His Piano) | Band Leader Frankie Carle (as Frankie Carle and His Piano) |