A film about Soviet popular science cinema. The film includes shots and fragments of popular science films, newsreels, shots about the work of the Central Studio of popular science and educational films. Shooting a solar eclipse, melting steel, silicon; underwater shooting, shooting of a surgical operation, shooting of the development of an embryo, animals, plants. Sculptor M. Gerasimov at work. Scientists of the Kurchatov Institute of Atomic Energy at work in the laboratory. Cosmonauts A. Nikolaev and V. Bykovsky in zero gravity. Assembling watches on a watch factory conveyor. Chronicle footage. Seeing off G. Sedov's expedition. Expedition "North Pole - 1" on an ice floe. Expedition on diesel-electric ship "Ob".