Nikolay, a World War II veteran, is appointed manager of a mine in a small town. Nikolay introduces a new method of operation in the mine. Kamarad`s self-importance is injured. The willful Kamarad was the mine`s supervisor. It is still unclear why the commander has shot his brother during the war. Geno, who witnesses the incident, works in the same town. He tells the ex-supervisor that it was Nikolay. Kamarad seeks for revenge. After a landslide in the mine, he joins the group of volunteers rescuers led by Nikolay. When they remain in private in the gallery, Kamarad does not hide his intentions any more. Nikolay tells him that he has been compelled to shoot his brother when the latter wanted to surrender and to drag along the rest of scared soldiers. The ceiling of the gallery falls in and buries Kamarad. Left on his own, Nikolay rescues the man who wanted to kill him.