A young medical student falls in love with her professor. To pay for her studies, she works extra nights and performs as a popular singer at a dance restaurant. But she is fired because of an unpleasant guest and takes a job as a maid. The professor appears in the family and a carousel of lies takes off.
| Actor | Role |
|---|---|
 Marguerite VibyEllen "Klas" Klasson alias Milly alias Maja | Ellen "Klas" Klasson alias Milly alias Maja |
 Ernst EklundLennart Klintberg | Lennart Klintberg |
 Gösta CederlundDr Palm | Dr Palm |
 Stina HedbergMrs. Brehmer | Mrs. Brehmer |
 Maritta MarkeBirgit Bergman | Birgit Bergman |
 Karin AlbihnVera Brehmer | Vera Brehmer |
 Ragnar WidestedtLudvig Brehmer | Ludvig Brehmer |
 George FantHugo Brehmer | Hugo Brehmer |
 Ruth WeijdenAugusta | Augusta |
 Ernst BrunmanRestaurant Manager | Restaurant Manager |
 Peggy LindbergSvea | Svea |
 Ingrid LuterkortStina | Stina |
| AAnna-Lisa HydénIngrid | Ingrid |
| GGun SchubertEbba | Ebba |
| IInga RasmussenEva | Eva |
| EElsa HolmquistBarbro | Barbro |
 Robert JohnsonThe Guest at the Restaurant who Gives Milly a Slap on the Butt | The Guest at the Restaurant who Gives Milly a Slap on the Butt |
| TTeddy PetersenMario (uncredited) | Mario (uncredited) |
 Henrik SchildtWaiter at the Outdoor Terrace (uncredited) | Waiter at the Outdoor Terrace (uncredited) |