Sohnen is a town built on vice for the occupying American forces in post-war Germany. Robert, a local truck driver who sells off gravel from the site he works on as a side hustle, runs into an old flame, Inge, who is now respectably married to American officer John. When the pair are driving in Robert’s truck, tragedy strikes and they find themselves covering up a terrible secret… From Helmut Käutner, Black Gravel was reviled on its release in Germany for its frank depiction of anti-semitism and savage depiction of a country on its knees after the war. Now newly restored, its status as an important and powerful work of European noir is becoming firmly established. 

Från IMDB:
A West German trucker who illegally sells black gravel reunites with a former lover, now married to an American.