A film about the expedition of the Arctic Research Institute and Moscow State University. Expedition route maps (animation). Yakutia. The village of Tiksi. Streets, buildings. Expedition base. The airport. Aircraft "AN-2", "LI-2" at the airport. Reindeer are loaded onto the plane. The plane is taking off, in the air. The movement of reindeer teams with cargo and members of the expedition (daytime, evening shooting). The Nerpalakh river. Members of the expedition by the fire, at a halt. Expedition camp at the foot of the Khaptagay-Tass plateau. Polar station at Cape Shalaurov. Buildings, station territory. Station employees at work. The members of the expedition carry out drilling and blasting operations to study the soil and fossil ice. Preparing the boat "Good Hope". A boat at sea, moving among the ice floes. Big Lyakhovsky Island. Laptevih sea. Birds on nests, with chicks, including: Lapland plantain, sandpiper-sparrow, red-breasted sandpiper, snowy owl. Lemmings. The dog runs after the birds. Polar poppies are blooming. Fishermen catch omul with their nets. Fishermen's dwelling. The remains of fossil animals found by members of the expedition: the skull and tusks of a mammoth, the jaw of a cave lion, the horns of an elk, the skeleton of a musk ox. Seascapes. Granite rocks.