Twelve graduates of the tenth "A" arrive to the virgin lands. Freed from childhood illusions, yesterday's schoolchildren get used to the unsettled life, to hard work on combines, tractors, on the threshing floor. Soon other difficulties are discovered.

Two look-alike boys, one a poor street kid and the other a prince, exchange places to see what the other's life is like.

Driver Panachuk, who took «left» passengers, is in a hurry to Gorsk. Panachuk tells the policeman who stopped him that he saw a murdered doctor in a crashed «Moskvich» car on the way.

Set during the 1939–1940 Winter War, the film follows a group of young women from Leningrad who volunteer for service at the front. Working as nurses in hospitals and on the battlefield, they devote themselves to saving the lives of wounded soldiers, while also taking up arms alongside the men in combat. Through hardship and sacrifice, their courage forges bonds of friendship and love that endure amid the trials of war.

Sergei, a constructor creates a robot, Robert, as his own copy. Tanya teaches Robert to feel and the robot becomes more human than his rationalistic creator.

KGB agents are organizing the disinformation campaign for a western spy.