Air defense exercises in the city of Dnepropetrovsk: paratroopers jump from an airplane onto the streets of the city; engage in hand-to-hand combat with a detachment of Osoaviakhimovtsev. View of Dnepropetrovsk at night. A collective farm worker shows a tool he has created for digging ditches. Writer I. G. Ehrenburg reads his poems to writers in the writers' club in Kiev. Test on the river of the first motor vessel with a gas engine: the ship is sailing on the river. Academician A. V. Palladin shows the cameraman chemical devices in his laboratory. Preparations for the release of the humorous magazine "Peretz": the artist draws a caricature in the editorial room; printing of a magazine in a printing house; revived figure on the cover of a magazine (graphic animation).