Oleg Sergachev was one of the best drivers in the taxi company. He got along with everyone and lived by the principle of "you scratch my back, I'll scratch yours." He wanted for nothing, living for himself and the woman he loved. But when a new director came to the taxi company and started laying down the law, the hero felt uncomfortable.

At the end of September 1941, Soviet artillery troops in besieged Leningrad realize that pretty soon they will fire their last shot, and after that the defense of the city will be doomed. The film is based on a true event: a small group of fearless soldiers transported a large supply of gunpowder through enemy lines to Leningrad.