Soviet agent Fedotov is air-dropped into Nazi occupied land. He changes over into Mr. Ekhert, a German entrepreneur wishing to take advantage of eastern worker slave labor in occupied Ukraine. Ekhert (Fedotov) enters into a partnership with a German entrepreneur who's son, Willie, is a high ranking Nazi. Together they go to Vinnitsa, Ukraine and start a factory. Fedotov begins seeking contacts with headquarters, but faces problems when a Ukrainian Nazi collaborator manages to infiltrate the Soviet partisans.