Novogroznensk oil refinery. Production processes in workshops. Stavropol region. The village of Grigoripolisskaya. A delegate to the Komsomol Congress, a milkmaid I. Maltseva, talks about the Congress to Cubans studying at the agricultural mechanization school. Caspian Sea. The ship "Bolshevik Karaev" at sea. The radio operator receives the radiogram and delivers it to the sailor Valeev. Kuban Canal. Canal dam and reservoir. Fishermen are fishing. The city of Makhachkala. Maternity hospital. V. Yakunin talks to his wife through the window. R. Yakunina shows a happy father a newborn child. May Day matinee in kindergarten. May Day demonstrations in cities: Grozny, Makhachkala, Nalchik, Stavropol, Cherkessk, Ordzhonikidze. Demonstrators are dancing a waltz, dancing Russian hopak, lezginka (synchronously). Children dance lezginka. Theatrical processions. Close-ups of demonstrators of different sex and age. Celebrating May 1 in Kislovodsk, in the sanatorium "Uzbekistan". Uzbek holidaymakers in national clothes are dancing a folk dance.