A film about the implementation of the Soviet-American space project "Soyuz - Apollo", the flight of the spacecraft "Soyuz" and "Apollo" with crews consisting of A.A. Leonov, V.N.Kubasov, T.Stafford, D. Slayton, V. .Brand. The film uses footage made in space by A.A. Leonov, V.N. Kubasov, T. Stafford, D. Slayton, V. Brand. PARTS ONE-SECOND Ships in space. Starts of ships. Docking and undocking of ships in space. The transition of astronauts from ship to ship. The astronauts are conducting routine experiments and testing a new docking station. The landing of the astronauts.