The action takes place during the time of Ukrainization, at the end of the 1920s. Kharkiv employee Myna Mazaylo decides to change his ukrainian surname to the russian Mazenin, as he considers it more solid.
Based on the book of Viktor Dragunsky "Deniskin's Stories".
Once upon a time there lived in Moscow the 1950's an October school student Deniska Korablyov. Every day he was terribly busy with the most ordinary children's activities: he did not prepare lessons, quarreled and put up with classmates, helped around the house and dabbled. He also planned a real murder, crossed paths with the criminal Fantômas, exposed the adult liars and thieves, participated in the selfless rescue of man...