In December 1941. For five days from the front line in besieged Leningrad arrives for re-forming company. The soldiers are placed in barracks outside the city. A young soldier Alexei Kazantsev pays attention to the girl Olya. She comes to the barracks every day to see her father, Private Koshkin, who among the St. Petersburg volunteers is going to go to the front. Olya is sick, and from hunger she can hardly stand on her feet. Koshkin gives her his tiny ration, which is given to soldiers. Alexei meets Olga and does his best to save the girl. On the eve of Alexei's return to the front, Olga becomes his wife.