The film tells about the work of the Salyut orbital stations. Filming in space was carried out by the crews of the Salyut station. 1 part. Mountain peaks covered with snow. Surface of the Earth (filming from Space). Caves are the habitats of ancient people. Start of the spaceship. Types of Norilsk. Uzbekistan, Bukhara region, desert, quicksand, dilapidated ancient buildings. Views of the city of Navoi. View of one of the new neighborhoods in Moscow. Moscow, Kutuzovsky Prospect, Triumphal Arch, in the foreground - a flower bed with tulips. View of the center of Moscow (filmed from a flying helicopter), the building of Moscow State University on the Lenin Hills, Pokrovsky Cathedral, the Kremlin (filmed from the side of the hotel "Russia"). Design office, employees at the drawing boards. One of the workshops of a space industry enterprise - an artificial Earth satellite is being assembled. Assembly in the workshop of the world's first orbital station "Salyut". Installation of the station "Salyut-4" in the shop, commissioning of devices, instruments at the station, employees at the station. New unmanned station "Salyut-2" in one of the shops, employees of the enterprise at the control panel. Fueling building at the Baikonur cosmodrome, fueling the Salyut-3 space station. Launch of the Salyut space station (Baikonur cosmodrome). Location installation. Interior view of the orbital station. Newsreel footage: 1960s, a pile town in the Caspian Sea, an underwater town of Jacques Yves Cousteau; July 1974, crew commander P.R.Popovich and flight engineer-researcher Yu.P. Artyukhin work at the Salyut-3 station in Space. Part 2. Solar panels at the Salyut-4 orbital station. Astronauts are mastering new technology, among them is the USSR pilot-cosmonaut A.A. Leonov. View of the fairing protecting the station at the time of its passage through the dense layers of the atmosphere. The moment of installation of the station. The station goes to the refueling building. View of the docking unit at the station. Cosmonauts commander of the first crew A.A. Gubarev and test flight engineer G.M. Grechko study and master new systems during a training flight at the station. The commander of the second crew PI Klimuk and flight test engineer VI Sevastyanov during a training flight at the Salyut-4 station. During the preparation for the flight, the Flight Control Center employees monitor the equipment on the control panel. Type of training stands. A hall with new specialized simulators. The first crew works out the orientation of the station by the stars. G.M. Grechko and A.A. Gubarev during training practice launching. Moment of splashdown of the vehicle with the astronauts. American and Soviet scientists are at the Salyut-4 station. French scientists at the Salyut-4 station. 1974, the moment the station was put into orbit. Start of the Soyuz-17 transport vehicle. January 11, 1975, night, cosmonauts A. Gubarev and G. Grechko on a special bus go to the spacecraft, get off the bus, report at the microphone, climb onto the ship. General view of the launch pad (filmed from the top point). The Soyuz-17 rocket takes off. View of the locating unit at dawn. MLTK. Docking of "Soyuz-17" and "Salyut-4", operation of the telescope mirror at the station. G. Grechko at the solar telescope at the station. Dark spots on the surface of the sun, prominences (filmed through a solar telescope). View of the Crimean Astrophysical Observatory in the mountains. A solar telescope for installation at an orbital station, created by scientists from the Crimean Observatory. Newsreel footage: A. Gubarev and G. Grechko work at the station in Space. Part 3. Scientists are assembling a model of the Salyut-4 station. View of the X-ray telescope created for work at the station. Scientist at the second X-ray telescope "Filin-2". G. Evpatoria, Mission Control Center, cosmonauts of the second crew PI Klimuk and VI Sevastyanov at the Oasis system with hydrogen bacteria, developed by scientists from the Chisinau Institute of General Microbiology of the Moldavian Academy of Sciences. Moldovan scientists in the laboratory conduct experiments with microorganisms. Kiev Institute of Molecular Biology and Genetics of the Academy of Sciences of the Ukrainian SSR, scientists are engaged in the preparation of microorganisms for space flight. Research in sterile boxes. Kaliningrad Moscow Region, Mission Control Center, the moment of negotiations with the cosmonauts at the orbital station. Scientists at the water regeneration station. On February 9, 1975, a transport ship with astronauts on board landed on Earth. Helicopters of the search party in a clearing in the forest. Employees of the search party open the hatch of the transport ship, the helicopter takes away the cosmonauts. The Soyuz-18 spacecraft at launch. Cosmonauts P. Klimuk and V. Sevastyanov climb aboard the ship. View of the launch pad from the height of the ship. The ship takes off. The sun rises over the steppe. The rocket flies in the sky. Ground communication point, employee at the control panel. Newsreel footage: 1975, cosmonaut G. Grechko conducts astrophysical research at the Salyut-4 orbital station; orbital station "Salyut-4" in Space; cosmonaut A. Gubarev wakes up, does exercises, cosmonauts shave, conduct biomedical experiments. Part 4. Moscow Aviation Institute, scientists in the laboratory are studying the state of the liquid under various flight conditions. Centrifuge. Special mine. Vilnius Institute of Botany of the Academy of Sciences of the Lithuanian SSR. Scientists are experimenting with plants in zero gravity. Institute of Physics of the Siberian Branch of the USSR Academy of Sciences in Krasnoyarsk, general view of the created earth starship. Experiments with the unicellular alga chlorella. Wheat grown in two compartments of the starship. "Bread" conveyor. Vegetable plantations. Locating installation in the mountains. Newsreel footage: 1975, V. Sevastyanov and P. Klimuk conduct experiments at the orbital station, turn on the solar telescope. P. Klimuk grows plants in zero gravity; cosmonauts at the Salyut-4 orbital station, photographs on the walls, P. Klimuk moves around the station, shaves in the washroom, vacuums the room, removes debris into the space garbage chute, V. Sevastyanov at the instruments, cosmonauts conduct biomedical research. Part 5. G. Korolyov, Mission Control Center, staff in the central hall at the monitors watching the crew of the station "Salyut-4" V. Sevastyanov and P. Klimuk, control room. Poppy field, in the background - radars. Crimea, Evpatoria, Mission Control Center of two orbital stations, scientists are watching the monitors. - images of the Earth's surface from Space. Scientists in the laboratory are studying the pictures. The sun's rays make their way through the clouds. Landing cosmonauts V. Sevastyanov and P. Klimuk in a transport ship to Earth. The launch of the Soyuz-20 unmanned spacecraft assault rifle from the cosmodrome, the ship is in the sky. MCC employees are monitoring the flight. February 1976, the process of undocking of the Soyuz-20 spacecraft and the Salyut-4 station (image on the big screen) Cosmonauts in spacesuits are going to the orbital station in the hangar for a training flight. Night, the launch of the spaceship. Newsreel footage: 1975, board of the Salyut-4 station, V. Sevastyanov and P. Klimuk are working at the station; docking in orbit of the Soviet and American spacecraft "Soyuz" and "Apollo", A. Leonov and V. Kubasov meet on board the American colleagues T. Stafford, D. Slayton and W. Brand. Surveying the Earth's surface from Space.