The 1930s. Naval maneuvers are underway. On orders from the command, three submarines are to "attack" a battleship. In the heat of the "battle," a fourth periscope appears. Where did the fourth submarine come from? Is it one of ours or an enemy vessel? These questions must be answered immediately by the commander of the destroyer "Otvažny," otherwise...

Based on the story of the same name by Sergei Antonov. The young journalist of the central newspaper Sirotkin came to the Siberian timber industry to write an essay about the glorious driver Khromov. But soon Sirotkin’s inquiring mind calculated the trick of Khromov, who, noting one kilometer in the vouchers, traveled a short route he knew only, draining the remaining gasoline from the curbside. Having revealed yet another fraud, in which the director was also involved, Sirotkin realized that he would not write an essay, but that he would be lucky with materials for the trial. This was announced by the authorities of the timber industry. Khromov himself took the journalist on the return trip...

The film is about the sailors who fought on torpedo boats in the Great Patriotic war.

Zakhar Psaltyrev went through many ordeals in the royal fleet, where massacres and bullying of people became a custom. Only thanks to his natural intelligence and perseverance, the illiterate peasant boy managed to avoid the fate of many of his comrades, who became drunkards and lost their human dignity. Captain 1st Rank Lezvin, commander of the cruiser "Svyatoslav", himself suffocating in the difficult atmosphere of the tsarist autocracy, fatherly fell in love with his messenger for his simple Russian soul, quick-witted mind, love for the homeland and hatred of oppression. Zakhar learned a lot from Lezvin, but soon they had to part. Zakhar becomes an active underground Bolshevik.

A film based on the life of the Russian scientist, Klement Timiriazev, who taught at Cambridge and Oxford and was awarded the Newton Mantle for his work. Timiriazev, one of the few outstanding Russian scientists who (publically) backed the Soviets in their revolutionary campaign, was later elected a delegate to the Leningrad Soviet by the sailors of the Baltic fleet. There he denounced his fellow scientists for failing to aid the Soviets and predicted that such aid would come.