Sergei Nolbandov directs this WWII propaganda drama starring John Clements as Captain Milosh Petrovitch, a Serbian guerrilla leader who forms a resistance army in the mountains of Nazi-occupied Yugoslavia. Meanwhile his equally fearless brother Stephan (Stephen Murray), a doctor at Belgrades Municipal Hospital, goes undercover as a Nazi collaborator in order to obtain information from the German forces to pass along to the guerrillas.