The young veterinarian Dr. Vlimmen settles in a small town on the North Sea coast. When he reports the conditions in the local slaughterhouse as cruelty to animals, he makes an enemy of the influential butcher van Heusden, who launches a smear campaign against him. Vlimmen is only supported by his sister Truus and his friend, lawyer Dacka, who loves Truus. In the end, Vlimmen succeeds in clearing his name. Through a daring operation, he regains his reputation and also finds Nel, the daughter of councillor van der Kalk.
| Actor | Role |
|---|---|
 Bernhard WickiDr. Jan Vlimmen | Dr. Jan Vlimmen |
 Heidemarie HatheyerTruus Dautzenberg | Truus Dautzenberg |
 Ursula HerkingMrs. van der Kalk | Mrs. van der Kalk |
 Wolfgang LukschyFritz Dacka | Fritz Dacka |
 Ellen SchwiersNel van der Kalk | Nel van der Kalk |
 Robert MeynMr. van der Kalk | Mr. van der Kalk |
 Ernst von KlipsteinDr. Treeborg | Dr. Treeborg |
| PPeter AhrweilerBaron Neervetten | Baron Neervetten |
| RRudolf DoberschKees van Bemmel | Kees van Bemmel |
| EEmmy JulichMrs. van Bemmel | Mrs. van Bemmel |
 Erni MangoldMientje | Mientje |
 Stefan HaarDop | Dop |
 Joseph OffenbachPietje Mulders | Pietje Mulders |
 Rudolf FennerButcher | Butcher |
 Josef Dahmenvan Heusden | van Heusden |
 Albert FlorathDr. Dirksen | Dr. Dirksen |
 Carsta LöckMrs. Kleef | Mrs. Kleef |
| EErna NitterJantje | Jantje |
| CCarl VoscherauWeduven | Weduven |
 Balduin BaasTiest | Tiest |
| MManfred SteffenBonneke | Bonneke |
| BBenno GellenbeckBauer | Bauer |
 Willy MaertensAlter Bauer | Alter Bauer |
 Karl-Heinz Kreienbaumjunger Bauer | junger Bauer |
 Rudolf FernauNot listed | Not listed |
| AAnna BlaskNot listed | Not listed |