During the Russian Civil War, pilot Sergey Sedov engages in battle with the Black Cat enemy fighter, controlled by the famous pilot Baru. In the battle, Sedov wounded Baru, but Sedov's plane fell apart in the air. Sedov was only miraculously saved. A few years later, Sedov and Baru meet in international competitions in Tehran. Baru are to defend the honor of a French company, Sedov and his student Ivanov - the honor of their country. In the end, the defeated Baru can only express hope of a rematch during a new meeting with Sedov in a future war. The film has not survived.

After graduating from college, Natasha returns to Kamchatka, where she spent her childhood and youth. The girl arrives at the geological group of engineer Rozhnov and here she meets her childhood friend Kirik, the expedition guide. A small group of geologists will have to move to the south of Kamchatka, where there should be oil. On the way, the expedition ends up in the area of ​​the active Klyuchevsky volcano, as a result of which the horses scatter and all the group’s property is destroyed. The group's already unenviable position is aggravated by heavy snowfall. Natasha makes an independent decision - and goes for help to the nearest collective farm, which is located two hundred kilometers from the group...

During the retreat from Baku in 1920, prisoners of the White Army counterintelligence are dropped off on an uninhabited island in the Caspian Sea, where they are left to die of hunger and thirst. Four of them—the Bolsheviks Miller, Zanoza, Nesterova, and the scientist Shatsky—manage to escape.

A border guards are hunting a spy infiltrated to the USSR.

At the school where worker Nikolai Zhikharev studied, students were given a lot of theoretical information, but how to work with machinery was not explained. Therefore, on one of the first working days at the plant Zhikharev made a serious mistake - he let steam out of the boiler. He was transferred to the clerk's office, but even there difficulties awaited the hero. However, Zhikharev did not give up. He decided to change the educational process in schools so that trained and prepared workers would come to the factories.

A coming-of-age story about a flute-playing boy (Yyvan Kyrla) from the Mari people, a national minority who lived near the Volga, and how he is educated by the Soviet state.