The events in the film revolve around the children's railway. Young railway workers have to confront the hooligan actions of a group of teenagers. One of them, Kamil, detained after another attack on an empty railway station, gets acquainted with her boss, Tahir Usmanovich, and young railway workers. Having met with their sympathy, a good attitude towards himself, Camil overestimated his actions and brought his friends to the children's railway.

After returning from the army, Rustam easily and naturally fits into the environment of workers from a petrochemical plant. The almost boyish carelessness and irresponsible pastime is replaced by an understanding of one's own need for a common cause, and a sense of inner dignity arises. This is what makes Rustam not reconcile himself to the fact that the brigade in which he works is among the laggards and is characterized by indiscipline. Having become a foreman, Rustam tries to create a healthy working atmosphere, takes part in the fate of Sagat, who recently returned from prison, rejects the attempts of the head of the shop to bribe the trust of the brigade with a "fake" salary. And outside the factory, he acts from a position of active kindness, although sometimes, helping others, he forgets about himself, does not have time to sort out the relationship with his girlfriend Lucy...

Zafar and his sister Yuldus live without a mother, and are raised by their grandmother, since their father is a pilot and is constantly on business trips. From one business trip, father brings Zafar as a gift a bear cub. Zafar begins to train a bear cub, dreaming of making him a circus artist, and starts his studies, so his father forces the boy to give the bear cub to a circus...