Yesterday's Leningrad schoolgirl Masha Yablochkina, after a fierce blockade winter of 1941-1942, comes to the railway courses hoping to survive and gain strength. From there, the girl is sent to the construction of the Shlisselburg highway, which connects the city with the mainland and is in direct sight of German artillery. So the heroine gets into the 48th locomotive column of the special reserve NKPS, which, at the cost of the deadly risk, will have to deliver 75% of all cargo and military equipment to Leningrad.
The year is 1943. Anna Petrova (Katerina Shpitsa) is a combat pilot who was seriously injured. She returned to the rear and works as a leading engineer at an aviation plant, where new Gyrfalcons aircraft are being prepared for testing. The plant's management, unaware of the consequences of her injury, instructs Anna, together with Major Zotov (Alexander Gorbatov), to drive the prototype of the "Gyrfalcon" to the front. In addition to the desire to defeat the enemy and return home with a victory, Anna pursues a personal goal. She is determined to get even with Major Briggel, the German pilot who killed her lover.
