The day of June 22, 1941 met fighter pilot Lieutenant Artem Gudimov on the ground. The train in which he was traveling to his military unit near the western border was shot at by German tanks. Artem managed to survive and get to the nearest airfield. There he learned what a terrible disaster had befallen our land. Many pilots died in the first hours of the war, the planes burned down before they could take off. The lieutenant understands that all hope now lies with people like him - brave and desperate, who have gone through the harsh school of the Finnish War. He takes command of a flight of fighters and begins a merciless battle with the German aces...