A film about the construction of the Boguchanskaya hydroelectric power station. 1h - Baikal. Angara. Dams of the Irkutsk, Bratsk, Ust-Ilimsk and Bogucharsk hydroelectric power stations. IP Petukhov passes by, says. Chronicle: construction of the Irkutsk hydroelectric power station. Hydraulic engineers at work. The boats are pulling the barge. GK Sukhanov reports. 2h - Chronicle: participants in the conference of the USSR Academy of Sciences at a conference in 1947 Landscapes. Road construction. Village in the taiga. The cook in the working dining room. I.B. Mikhailov is speaking. 3h - The team of G.M. Glukhov is working. By G. M. Glukhov. The work of crane operators. New town. The road in the taiga.