Todd Sampson travels to the Siberian Arctic to live alongside the Nenets, a nomadic people whose lives follow their reindeer herds across the tundra. The film follows the migration itself: families dismantling and hauling their reindeer-hide tents, sledges cutting across frozen ground, herders tracking animals through whiteout conditions and temperatures that drop far below freezing. Sampson takes part directly, helping with herding and butchering, sleeping in the tents, and eating what the Nenets eat, which gives the film a firsthand texture rather than a distanced, narrated overview. Interviews with herders cover what the cold costs them physically, how children are raised on the move, and how reindeer remain the center of food, clothing, transport, and trade. The documentary also touches on the pressures closing in on this way of life, from climate shifts changing migration routes to industrial development encroaching on traditional grazing land. It is a close, practical look at how an entire culture has organized itself around surviving at the edge of the habitable world.