Opera singer Prudence Budell, overhears truck driver Johnny Donnetti singing opera, and persuades her opera company to give him a chance in her new opera. They fall in love, but on meeting his colleague Mary while visiting Johnny's work, Prudence becomes convinced Johnny is in love with her.
| Actor | Role |
|---|---|
 Kathryn GraysonPrudence Budell | Prudence Budell |
 Mario LanzaJohnny Donnetti | Johnny Donnetti |
 José IturbiHimself | Himself |
 Ethel BarrymoreAbigail Trent Budell | Abigail Trent Budell |
 Keenan WynnArtie Geoffrey Glenson | Artie Geoffrey Glenson |
 J. Carrol NaishPapa Donnetti | Papa Donnetti |
 Jules MunshinMichael Pemberton | Michael Pemberton |
 Thomas GomezGuido Russino Betelli | Guido Russino Betelli |
 Marjorie ReynoldsMary | Mary |
 Arthur TreacherHutchins | Hutchins |
 Mimi AgugliaMamma Donnetti | Mamma Donnetti |