1 plot. Construction of the Kuibyshev hydroelectric power station (HPP). 2 plot. Employees of a tire plant in Kirov are studying materials of the XIX Congress of the CPSU (b). Assembly of tires in the workshop of the plant. 3 plot. Young workers of the Bezhetsk steam locomotive plant are studying the biography of I. Stalin in a circle at the House of Culture. Students of the evening University of Marxism-Leninism listen to a lecture on philosophy. 4 plot. The designers of the Yaroslavl plant "Krasny Mayak" are working on drawings of new electrical tools and mechanisms for construction work. Testing of a new vibrator H-50, a circular electric saw in the machine shop of the plant. 5 plot. The masters of the Kirovskaya Harmony artel collect accordions and polish them.