In the brutal winter of 1925, a desperate race against time unfolds to deliver life-saving serum to a remote Alaskan town gripped by a deadly diphtheria outbreak. At the heart of this perilous mission is Willem Dafoe as Leonhard Seppala, a seasoned but aging musher who must embark on the most treacherous leg of the relay across the frozen wilderness. His greatest asset is not his sled, but his lead dog, Togo, an undersized and aging Siberian Husky whose fierce intelligence and indomitable spirit have forged an unbreakable bond with his master. This gripping drama, directed by Ericson Core, weaves between the present-day crisis and flashbacks revealing Togo’s challenging origins and the profound partnership that prepared them for this moment. Facing blinding blizzards, unstable ice, and sheer exhaustion, Seppala and his team push beyond the limits of endurance, where the loyalty of one remarkable dog becomes the key to saving countless lives.