The city of Sverdlovsk. The airport. Control room. Aircraft TU-104, IL-18 at the airport. Refueling the plane. The IL-18 aircraft taking off on the route "Sverdlovsk-Mineralnye Vody", taking off, in flight. The stewardess makes an announcement to passengers. Pilots, including the crew commander N. A. Sidorenko in the cockpit. Passengers in the cabin. Workers of the Sverdlovsk tool plant: E. Leontiev, V. Korsakov, A. Novoselov at work; talk about their work (behind the scenes), play volleyball after the shift. Investigator [of the Criminal Investigation Department] of the city of Sverdlovsk N. Andreev interrogates the accused in a road traffic accident. Policemen, forensic expert at work. Master in the manufacture of musical instruments - violins, violas, cellos A. M. Shipulin at work, teaches students.