The film focuses on life in a World War II German penal battalion camp somewhere in Russia. The convicts include a heroic doctor unjustly convicted of avoiding military service, an officer who retreated against orders, and common criminals. It shows their life in the camp, clearing mines, living in trenches on the front line.

Ursula Gothe is the mother of a son, husband Richard is to be promoted soon. Her orderly life in the pretty villa gets out of joint when Ursula discovers a girl's newspaper ad. Is "Suchkind 312" her illegitimate daughter Martina, whom she had lost while fleeing from the East?