Departure of the All-Union Shock Komsomol Detachment named after The 27th congress from Moscow to the construction sites of Siberia; among the speakers at the rally - 1st Secretary of the Central Committee of the Komsomol V.M. Mishin Production processes at the Moscow plant of automatic lines. Meeting of the party committee of the plant. Assembly of tape recorders "Parus" at the Saratov Radio Plant. The plot tells about a former pilot, a participant in the Great Patriotic War, N. N. Bukharov, who built a homemade plane and flies on it.