A film about the days of the union republics held at the Exhibition of Achievements of the National Economy in Moscow, in honor of the 60th anniversary of the formation of the USSR. Moscow city. Krasnopresnenskaya embankment. A pleasure boat is sailing along the Moskva River. VDNKh territory. Central pavilion. Exhibition "In a Single Family". Participants of the anniversary exhibition from Kyrgyzstan, Estonia, Latvia, Lithuania, Moldova, Tajikistan, Uzbekistan, Kazakhstan, Ukraine, Belarus, Turkmenistan, Armenia, Georgia, Azerbaijan, Russia. Estonia. A fisherman on one of the ships, boxes of fish. Towers of old Tallinn. Tartu State University. Opening of a museum at the university. Tallinn production association "Tallex". Arrival of the Riga-Moscow branded passenger train at the Moskovsky railway station. Latvian delegates at the Central Lenin Museum. The Lithuanian delegation at the Mikhail Kalinin Museum in Moscow. Performance of the Moldavian dance ensemble at VDNKh. Speech by the Secretary of the Central Committee of the Communist Party of Moldova Kalenik in the conference hall of the exhibition. Members of the delegations are passing, are on the streets of Moscow, at a meeting in the Moscow City Council. Speakers: Uzbek dance ensemble, tightrope walker. Delegates in the office of V. I. Lenin in the Kremlin. Kyrgyz delegates in the Lenin Mausoleum, among them the writer Ch. Aitmatov, at the tomb of the Unknown Soldier. Speakers: artists of the Ukrainian choreographic ensemble, the Azerbaijan choreographic ensemble. Turkmenistan. Cotton picking. Sheep in the pasture. Members of the delegation at the Astronautics Museum in Star City. Cosmonaut P. Klimuk tells about the exhibits of the museum of the Belarusian delegation. Performance of the Russian folk song and dance ensemble at VDNKh. The ceremonial meeting in the Kremlin Palace of Congresses, dedicated to the 60th anniversary of the formation of the USSR. Yu. V. Andropov speaking. Among those present are astronauts: A. A. Leonov, P. K. Popovich. Performance of the combined choir on the stage of the KDS.