Prisoner Ivan (Ivan Straus), a talented violin player, performs for Hauptsturmführer SS Hecht in his office. The one-armed Hecht (Josef Somr) by turns listens and talks to Ivan, whose sympathy he would like to gain. It would be enough for Hecht if Ivan only said that he has nothing in common with the other prisoners. But Ivan does not betray his people. He says nothing and, in his imagination, sees a revolt of the prisoners, their fight with the Germans and their dogs and Hecht's death.—NFA.cz