Construction of the Kuibyshev hydroelectric power station. Volga river (winter photography). The dredger is working. The city of Petrozavodsk. Production processes at the [Onega Machine-Building Plant]. Participants of the Second World War - factory workers working at the machines, speak at a solemn meeting dedicated to the Day of the Soviet Army (February 23). Shuisko-Vidan timber industry. Felling, sawing, skidding and timber transportation. Forest landscape. The city of Petrozavodsk. All-Union competition of skiers of the sports society "Krasnaya Zvezda". Parade and performances of the participants, awarding the winners.