Concentration camp commander Kraft finds out that prisoner Kominek is a former professional boxer. Overnight, the prisoner is made Kraft's exercise partner and unwillingly rises to a privileged position at the camp. His anger over the death of his friend and co-prisoner leads to open revolt. The film brings a new view of human degradation during fascism by a tragic story of one man whose only chance for survival is to accept the rules of an unequal game.
| Actor | Role |
|---|---|
 Štefan KvietikJan Komínek | Jan Komínek |
 Manfred KrugKraft | Kraft |
 Valentina ThielováHelga | Helga |
 Józef KondratVenzlak | Venzlak |
 Edwin MarianWilli | Willi |
 Gerhard RacholdHolder | Holder |
 Jindřich NarentaDr. Gluk | Dr. Gluk |
| EEdmund OgrodzińskiStasek | Stasek |
| JJan BobekEmil | Emil |
 Ján KováčikNot listed | Not listed |
| ZZdeněk KrausOndro | Ondro |
| ĽĽudovít OzábalMarian | Marian |
| MMagda GödölleováHalina | Halina |
| JJozef ŠikutaNot listed | Not listed |
| TTeodor PiovarčiNot listed | Not listed |
| JJán GécNot listed | Not listed |
| HHana SlivkováNot listed | Not listed |
| VViera RadványiováNot listed | Not listed |
| ŠŠtefan WinklerNot listed | Not listed |
 Leopold HaverlNot listed | Not listed |
| DDezider JandaNot listed | Not listed |
| OOľga PristachováNot listed | Not listed |
| DDobroslava NovákováNot listed | Not listed |
| IImrich FábryNot listed | Not listed |
| DDušan LenciNot listed | Not listed |
 Eduard GrečnerNot listed | Not listed |