A film about the 4th Congress of People's Deputies of the USSR. Moscow city. Kremlin Palace of Congresses. Speakers on the podium (synchronously): M.S. Gorbachev, A.M. Obolensky, D. Kugultinov, Alekseev, Yu. Bocharov, A. Sobchak, G. Popov, Metropolitan Pitirim. They are speaking at the microphone (synchronously) Kasian, Akhromeev and others. Interview (synchronously) Yuri Afanasyev, Boris N. Yeltsin. In the hall among the deputies - E. Panfilova. Interview (synchronously) with residents on the streets of Moscow. All-Union referendum on the preservation of the Soviet Union. Mikhail Gorbachev, Boris N. Yeltsin, I. Silaev are voting at polling stations.