During World War II, while Russian soldiers try to hold back the German onslaught, the leaders of the Third Reich plan an attempt on Stalin's life. The case is assigned to a team called Brandenburg 800 and a Nazi agent embedded in the Soviet army.

Lieutenant Novitsky takes a closer look at the soldiers and officers camped out by the station. He is particularly interested in Captain Samarin, who behaves in an overly friendly manner with his fellow travellers.

Soviet sappers succeed in a major sabotage operation of the railway tracks. However, a German train carrying weapons for the army derails, killing almost all of the saboteurs.

In Moscow, Berezhnoi and his assistants arrive at the address where the body of an evacuated military man has been found. The murdered man is Major Letyagin who, according to eyewitnesses, had recently been living with a young woman.

USSR agents must stop a covert Nazi operation to kill Joseph Stalin in 1941.

USSR agents must stop a covert Nazi operation to kill Joseph Stalin in 1941.