Kor. 1. Fraternal sea. Road to the city of Bratsk. The dam of the Bratsk Hydroelectric Power Station. Ust-Ilim. Head tehkomissii Bratskgesstroy Receiving pit AN Marchuk talks with engineers. Clearing the pit before the flooding. Flooding of excavation, analysis of the lower and upper explosion jumper. Kor 2. Machines with a primer directed to the bed of the Angara River. Filling the channel. Rally to mark the end of the river floor. Kor. 3. Angara River above the dam of the Ust-Ilim hydroelectric station. Islands "Calves" to flooding. Village Power.