Newspapers, posters, archival documents, photographs, newsreels on the history of the celebration of May 1 Day and the international solidarity of workers in England, Germany, France, USA, Russia. Newsreel: demonstration of British miners as a sign of solidarity and support for Soviet Russia; children of British miners on vacation in the USSR. May Day demonstration in Germany in 1929; May 1 in Berlin in 1945: white flags are hung on the walls of houses, Soviet soldiers are running down the street, Soviet women soldiers are distributing bread to the Germans. Chronicle: VI Lenin at the laying of the monument to Karl Marx and the monument "Liberated Labor" on May 1, 1920; May Day demonstrations in Moscow in 1917, 1937, 1945, 1986. Meeting room of the 27th Congress of the CPSU, MS Gorbachev speaks. Chronicle: service in the church, church procession in the Vatican on May 1, 1955. Soviet soldiers in the war in Afghanistan: helicopters are flying over the mountains, soldiers are shooting. The soldiers carry the wounded man into the helicopter. Hero of the Soviet Union, soldier A. Koryavin, who died in Afghanistan (portrait). The farm "Pervoe Maya" in the foothills of the Pamirs. 102-year-old resident of Berdyansk, participant of the first May Day celebrations in Russia I. Ya. Afanasenko, on whose behalf the story is told in the film.