It's 1930 and two record producers are competing to sign a big contract with the leading singer of the day. One kidnaps the other, thinking it's in the bag - unaware that his competitor has a twin who will step in to save the day.
| Actor | Role |
|---|---|
 Ole SøltoftAnthon Master / Benny Master | Anthon Master / Benny Master |
 Cia LöwgrenDolores Rossi | Dolores Rossi |
 Karl SteggerMax | Max |
 Bent WarburgWalther | Walther |
 Lise HenningsenMisse | Misse |
 Preben MahrtUlrik Ulvenstein, director of Onofon | Ulrik Ulvenstein, director of Onofon |
 Louise FrevertSecretary Bibi | Secretary Bibi |
 Anne Bie WarburgSussi | Sussi |
| LLisbeth OlsenAnne, Anthon's secretary | Anne, Anthon's secretary |
 Arthur JensenLeopold | Leopold |
| EEva WeinreichNora, Ulrik's Secretary | Nora, Ulrik's Secretary |
 Poul BundgaardThe inventor | The inventor |
 Kate MundtSupervisor at the bathing establishment | Supervisor at the bathing establishment |
 William KisumSupervisor at the bathing establishment | Supervisor at the bathing establishment |
| RRütgerDriver | Driver |
 Benny HansenPolice officer | Police officer |
| IIngrid BuchholtzLuscious lady | Luscious lady |
| BBasil PattonDancer | Dancer |
| MMagi StockingNot listed | Not listed |