Sonja, a little ballerina at the Grand Theater, is secretly in love with the handsome tenor Luis Mariano. One night, she hurts her feet while dancing and under the influence of a sedative falls asleep and starts dreaming. She is Sonja Ilyanova now, a young gypsy dancer who dreams of performing before Alexei, the son of the Czar.
| Production | Artur Brauner | Producer |
| Directing | Arthur Maria Rabenalt | Director |
| Directing | Max Diekhout | Assistant Director |
| Writing | Roger Richebé | Writer |
| Writing | Hans Rameau | Writer |
| Sound | Franz Lehár | Music |
| Editing | Martha Dübber | Editor |
| Sound | Friedrich Mögle | Music |
| Production | Roger Richebé | Producer |
| Camera | Georg Bruckbauer | Director of Photography |