Engineer Dukalsky arrives from Moscow on the instructions of an underground anti-Soviet center to the Baltic Shipyard in order to take possession of the blueprints of a powerful ship engine. The pest meets the author of the project - a young and incorruptible self-taught master Ivanov. After a series of unsuccessful attempts to buy out or steal the drawings from the author, Dukalsky decides to take Ivanov with him. Criminal Investigation Officers will attack the trail of criminals.

1960 film by Ilya Frez

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.

Funny adventures of two best friends Mishka and Kolya and their dog called Little Friend.

A beautiful maiden, Marya Morevna, gives her prospective husband, the mighty warrior Nikita Kozhemyaka, three riddles to solve before she'll marry him. Before he can tell her the answers, the Russian land is invaded by the armies of Kashchey the Immortal, in whose footsteps death and destruction follow. Marya is abducted by Kashchey, and Nikita finds his home in ashes. Nikita meets a kindly wizard who gives him a cap of darkness. With it, the hero will find a way to save his bride and rout Kashchey.