1 plot. Preparing the substrate for high-altitude flight. Stratospheric balloon start. Stratospheric balloon in the air. 2 plot. Academician Chaplygin in his office. MI Kalinin in the Kremlin presents academician Chaplygin with a diploma and a gold medal "Hammer and Sickle" Hero of Socialist Labor and the Order of Lenin. 3 plot. Giant carousel machine, built at the Leningrad plant. Sverdlov. 4 plot. View of one of the Altai villages. A flock of sheep from the Siberian Merino sheep-breeding farm grazes in the pasture. 5 plot. Opening of the USSR championship in speed skating at the Dynamo stadium in Moscow. Skaters compete at distances. 6 plot. Lake Seliger in winter. Skiers are resting at the camp site. 7 plot. Performance by the Uyghur ensemble of folk instruments led by Honored Artist of the Kazakh SSR Salima Sattarova. S. Satarova performs a folk song.