The film is set in 1920 in the Volga region during the Civil War. The story of the heroic struggle of the crew of an armored train.

Timid old woman Pelageya Nilovna observes the revolutionary activities of her son Pavel Vlasov and gradually comes to realize that his cause is a great and noble one. She involves herself in the movement and finds joy and great courage in her new life as a revolutionary. Based on Gorky's novel, filmed in the silent era by Pudovkin.

Four former soldiers reunite 25 years after the war. Last time they saw each other on the Byelorussian railway station in the summer of 1945. Now they've come together to mourn the death of a friend.