In September 1941, lieutenant Ilya Streltsov, who graduated from the flight school, was assigned to the fighter aviation regiment guarding the sky of Moscow. He meets in part the nurse Zoya, with whom he grew up in the same yard and with whom he has long been in love. During the first training flight on the "Seagull", lieutenant Streltsov shot down a German plane and received the nickname "Lucky." Streltsov is jealous of the squadron commander to nurse Zoya, believes that he is finding fault with him. For a whole month he is not allowed to fly sorties. In October 1941, lieutenant Streltsov made his first sortie, he shot down one plane and rams the second. For this battle, he is awarded the title Hero of the Soviet Union.

A black child rescued from by Russian sailors, whom they name Maksimka, having overcome his fear of white people, turns out to be an unusually smart and kind little boy. The rude drunken sailor Ivan Luchkin was especially attached to the boy. Once it was Maksimka who managed to save Luchkin from foreign recruiters of labor. For resourcefulness and courage, the young hero is enlisted in the team of the corvette and becomes the cabin boy of the Russian fleet.

The film tells about the Decembrists’ revolt in the south of Russia. Right before the Decembrist Revolt 1825 a chevalier of fortune decides that it's time for a game. But on whom to make a bet? He asks the cards. But he's not the only one who makes the choice.