A youth brigade at one of Kyiv's factories is competing for the title of Communist Labor Brigade. They are assisted by an old worker, Yakov Sereda. However, two people actively interfere with the Komsomol members: the rogue Yevgeny, who pretends to be a self-taught inventor, and the careerist engineer Kamensky...
Aviation school. Future officers of the jet squadron are engaged in practical studies. When performing a training assignment, cadet Korenyuk violates flight discipline. The instructor pilot, considering Korenyuk to be a talented cadet, forgives him for this offense. When, during another training flight, Korenyuk dives onto a fishing vessel, cadet Bukreev, who is in the cockpit, takes the blame. Bukreyev is arrested for ten days...
In the middle of the 17th century, Ukrainian peasants and Cossacks rose up to fight against the Polish gentry rule. About the events of the National Liberation War in Ukraine under the leadership of Bohdan Khmelnitsky, who with a firm hand led the insurgent masses to an alliance with Russia.
