The film tells about the preparation and conduct of a space flight on the multi-seater spacecraft "Voskhod", about the crew of the spacecraft - the USSR cosmonauts V. M. Komarov, B. B. Egorov, K. P. Feoktistov. Soviet cosmonaut Yuri Gagarin talks about VM Komarov (synchronously). The astronauts are preparing for the flight, perform training exercises. Professor A. I. Lebedinsky talks about B. B. Egorov (synchronously). War veteran, scout Yurov talks about K.P. Feoktistov, with whom he fought during the war (synchronously). Astronauts among the delegates at the First Youth Forum in Moscow; playing tennis on the court; talk to journalists; read newspapers, magazines; do exercises, undergo a doctor's examination; say goodbye to Yu. A. Gagarin and A. G. Nikolaev at the cosmodrome. Astronauts in the cockpit before launch. Workers in the hall of the coordination and computing center are receiving information from the astronauts. Residents of Kustanai welcome the astronauts after returning to earth. Writer K. Simonov talks with astronauts. Doctors examine Komarov, Egorov, Feoktistov after the end of the flight. Residents of Moscow are meeting the cosmonauts. First Secretary of the CPSU Central Committee Leonid Brezhnev welcomes the cosmonauts. Astronauts on the podium of the Mausoleum. Cosmonauts awarding "Gold Stars" to Heroes of the Soviet Union in the Kremlin Palace of Congresses.