The film tells about the flights of cosmonauts V. Ryumin and V. Lyakhov, N. Rukavishnikov and G. Ivanov. 1 part. Cosmonauts V. Ryumin and V. Lyakhov aboard the Salyut-6 orbital station: perform work to restore the station, shave, comb, go to sleep in specially suspended sleeping bags, conduct experiments, send the results of their experiments in special containers on a transport spacecraft to Earth, watching TV from Earth in anticipation of an international space crew consisting of cosmonauts N. Rukavishnikov and G. Ivanov. Members of the international space crew: N. Rukavishnikov and the Bulgarian cosmonaut G. Ivanov in spacesuits pass through one of the premises of the Baikonur cosmodrome before the launch of the spacecraft. Mission Control Center staff are watching the launch of the spacecraft, the failed docking with the orbital station on the monitors. Among the specialists A. Eliseev and others. Cosmonauts N. Rukavishnikov and G. Ivanov conduct radio negotiations from orbit with the MCC about an emergency situation - about engine failure. The spacecraft, and then the descent vehicle flies to Earth, the cosmonauts report the situation by radio, including the landing of the descent vehicle. Meeting of astronauts on Earth. Part 2. View of the Earth from space (from the window of the orbital station). Cosmonauts V. Ryumin and V. Lyakhov aboard the orbital station. General view of the Crimean radio telescope. Checking the operation of a special space antenna, which will have to interact with a radio telescope from space, in the presence of a group of scientists; among those present - the President of the Academy of Sciences of the USSR A.P. Alexandrov. Cosmonauts V. Ryumin and V. Lyakhov are engaged in simulators at the orbital station, perform physical exercises, gradually increasing the load. MCC employees are watching the orbital station, the antenna entangled in the cables. The cosmonauts work in open space, free the antenna from the cables, get rid of it, and conduct radio communications with the MCC. MCC employees are observing the work of the cosmonauts, applauding the successful completion of the assigned tasks; among those present: A.A. Leonov and others. Meeting of astronauts on Earth after landing.