An ex-servant becomes a lonely Shepard, killer hidden in the mountain woods during wartime. Under disguise of a black marketeer, a woman from the town maintains steady connection between the town and mountain, and organizes a resistance movement. Shepard falls in love with her, but suspects that she possibly wants gold instead.

German forces in Yugoslavia set out to destroy the stronghold of Tito with a traitor's help, but are overcome by Partisan resistance.

In the moment when Belgrade industrialist Života Cvijović had dreams to marry off his son Milorad, Doctor of Philosophy, to a minister of transport's daughter, a telegram from Milorad's professor from Heidelberg arrives, saying that he wants to visit them. Bad luck is that Velimir, a poor student, was financed by Milorad, and studying under his name received a diploma.