In 1925, a diphtheria epidemic broke out in an isolated village in Alaska, affecting some of the residents there, especially children. Given that an epic snowstorm is approaching and it was impossible to use airplanes to bring the antidote to a hospital 1,000 miles away, the only solution I can find is to use dog-drawn slits. to bring the medicine. Thus, the city leaders appeal to Leonhard Seppala and his team of champion dogs led by Togo. They will embark on an adventure that will test their strength, courage and determination, facing the storm and always being on the brink of death. The film is based on real facts and tells the story of Togo, declared in 2011 by Time Magazine the most heroic animal of all time.