Moscow city. XVIIth Congress of the Komsomol. Leonid Brezhnev, Nikolai Podgorny, Andrei Gromyko, Mikhail Suslov are on the presidium of the congress. Komsomol members take an oath of allegiance to the cause of the CPSU and the ideals of communism. Arrival in Siberia for the construction of the Baikal-Amur Mainline of Komsomol members - the first fighters of the All-Union Shock Detachment named after the XVII Congress of the Komsomol. Tent camp "Zvezdny" of the first builders of BAM. Construction of a school, a canteen, and the first temporary suspension bridge across the Tayura River. Builders are laying a clearing in the taiga through which the Baikal-Amur Mainline will pass. Solemn ceremony of joining the western and eastern sections of the highway. The admissions committee is given two halves of the symbolic key. The orchestra is playing.