A film about the international community of boys and girls on the construction of the Ust-Ilimsk complex. Landscapes; taiga, boats on the banks of the Angara River, the Angara village of Nevon. Ust-Ilimsk hydroelectric power station. Open-air museum near Irkutsk. Ust-Ilimsk city; streets, dormitory building, passengers on buses. Members of the Komsomol brigade named after the XVIII Congress of the Komsomol are working on the construction of residential buildings. Construction of the Ust-Ilimsk timber industry complex. Bulgarian, Romanian, Polish, Hungarian specialists and specialists from the GDR are working on the construction. (the CMEA member states). Workers' brigades of Imre Kish undergo training in the brigade of A. Alekseev. The construction of the timber industry complex is described by: S. Kosturkov, D. Stanchev (Bulgaria), L. Gordymov, I. V. Yazloviykiy (synchronously).