Moscow. Komsomol clean-up day to clean the streets. The village of Koshki, Chuvash Autonomous Soviet Socialist Republic. The founder of the Chuvash literacy I. Yakovlev at home with his students. The city of Podolsk. Moscow region. Mechanical plant - workers in the shops for machine tools, assembly of machines, preparation and dispatch of boxes with finished products, the territory of the plant, a warehouse, a meeting of workers on the transition to a 7-hour working day. Construction of workshops, labor exchange, study of workers in the evening at school.