When Ludvig Ekman is ordered to do his military rehearsals course, he sends one of his employees, Lasse Alm, to do it for him. Everything is fine until Alm also is ordered to do the same thing - on the same boat! There is only one thing to do: Ekman goes as Alm. When Ekman goes aboard, he discovers that it is his wife's ex-husband who is captain and Ekman really is punished for marrying his wife.
| Actor | Role |
|---|---|
 Åke SöderblomLasse Alm | Lasse Alm |
 Egon LarssonHarry Nyström | Harry Nyström |
 Gunnar BjörnstrandLudvig "Ludde" Ekman | Ludvig "Ludde" Ekman |
 Åke GrönbergEskil Bladh | Eskil Bladh |
 Yvonne LombardLilly Persson | Lilly Persson |
 Sonja StjernquistNellie Berggren | Nellie Berggren |
 Birgitta ValbergOlga Ekman | Olga Ekman |
 Fylgia ZadigBlondie | Blondie |
| LLil YunkersBébé | Bébé |
 Alexander von BaumgartenFrench Police Lieutenant | French Police Lieutenant |
 Lars EggeNot listed | Not listed |
 Willy PetersNot listed | Not listed |
| EEddy AnderssonNot listed | Not listed |
 Sten ArdenstamNot listed | Not listed |
 Keve HjelmNot listed | Not listed |
 Karl-Arne HolmstenNot listed | Not listed |
| GGösta HolmströmNot listed | Not listed |
| HHarry KampfNot listed | Not listed |
 Birger LensanderNot listed | Not listed |
 Arne LindbladNot listed | Not listed |
 Olav RiégoNot listed | Not listed |
| JJohn StarckNot listed | Not listed |
| AAxel WitzanskyNot listed | Not listed |