The summer of 1942 turned out to be hot in all respects. A tank company led by Lieutenant Sokolov is moving to help comrades waging bloody battles on the outskirts of Voronezh. Their task is to block the access of the Nazi troops to the city. After all, if the Nazis capture this point, nothing will prevent them from breaking into Stalingrad. The Soviet army cannot allow this. Therefore, he sends tankers to the crossing of the Don.