June 1946: Stalin invites Russian emigres to return to the motherland. It's a trap: when a ship-load from France arrives in Odessa, only a physician and his family are spared execution or prison. He and his French wife (her passport ripped up) are sent to Kiev. She wants to return to France immediately; he knows that they are captives and must watch every step.

Impersonating a knight is one of the favorite games of nine-year-old protagonist. Now as Don Quixote, now as D'Artagnan he is fighting evil, he is searching for justice and defending the weak. Together with his friends, packed in cardboard armor, they play all day long. As he is playing, however, he unwittingly witnesses the relation between his parents and gradually comes to understand that the world of the adults is far removed from the canons of knightly honor. His parents love him, but never seem to find the time to listen to his concerns. The deceit, corruption and lack of respect in his own family alienate the small boy. The only adult, whom the boy trusts, is his uncle to whom he is attached by a genuine, equal, man-to-man friendship. He takes him to the cinema and theater performances and talks to him like with his peer. Will this sensitive kid ever succeed in building an internal armor against selfishness and rudeness?

Boev, an enthusiastic form master, is trying hard to establish rapport with his final-year students. His frankness, buoyancy and good nature soon make him a universal favorite. The only one who does not approve of him is headmaster who loves his job, but is not aware of how dated his own views are and cannot understand the young teacher. Apart from this, Boev comes in into particularly sharp conflict with his colleague and childhood chum Kiril who is consumed by jealousy and the ambition to get promoted quickly.

A quite line in the capital city. A little girl, Veseto, slips out of home unnoticed, attracted by the voices of children playing in the yard. when the kids get tired of playing hide-and-seek, they scatter and Veseto sets out in a long stroll across the city, full of exciting adventures. She talks to a chimney sweep, stops to look at some land surveyors at work, watches an interesting football game at the stadium, enjoys herself at the fair, extemporizes as an actress and has a trying experience on a building site. All the people in the neighborhood start looking for the lost child. In the evening, Veseto reappears. She is back to the arms of her mother, while the people in the neighborhood prove by deeds their human solidarity, their love for children and their resolve to struggle for peace, a must for children's future all over the world.