Arctic Ocean. Seeing off the icebreaker Sibiryakov from Arkhangelsk. O. Yu. Schmidt on board the icebreaker. Icebreaker in the ice. Polar explorers from "Sibiryakov" are building a polar station. Unloading the icebreaker. Polar station on Rudolf Island. House of polar explorers. Arrival of the aircraft "USSR-N-170" from the mainland. The members of the expedition conduct scientific research. Drifting ice floe. ID Papanin hoisting the USSR flag on an ice floe. The Polyarnaya Arrow train departs from Murmansk. Construction of new cities in the North. School. Northerners read the newspaper Polyarnaya Pravda. Reserve of black-brown foxes. A caravan of Soviet icebreakers at sea.