Togo is a 2019 American historical adventure film directed by Ericson Core and produced by Walt Disney Pictures. The film centers on Leonhard Seppala and his titular sled dog in the 1925 serum run to Nome to transport diphtheria antitoxin serum through harsh conditions during an epidemic of diphtheria.[3] The film stars Willem Dafoe, Julianne Nicholson, Christopher Heyerdahl, Michael Gaston, Michael McElhatton, Jamie McShane, Michael Greyeyes, Thorbjørn Harr, Shaun Benson, and Nikolai Nikolaeff. It was released on Disney+ on December 20, 2019. The movie received generally positive reviews from critics.

The film flashes between musher Leonhard Seppala raising his dog Togo and the 1925 serum run to Nome.

In 1913, Seppala and his wife Constance welcome a newborn Siberian Husky puppy to their sledding dog pack in Nome, Alaska. While Seppala insists on immediately retiring him due to his small and weak state, Constance is strongly supportive of the puppy. The young dog turns out to be close to unmanageable, and refuses to stay at home when the other dogs are working. He constantly escapes when left in the kennel, and seeks out Seppala’s dog team, causing great disruption to Seppala’s training routine. After trying to get rid of the Husky twice, the young dog escapes by crashing through a window pane and again returns to find the other dogs training. Seppala gives up and allows him to run with the others where, to his astonishment, he discovers that he is energetic enough to outrun the other dogs, and a natural leader of the dog team. He realizes the puppy has the potential to be a future champion. He decides to call him Togo, after another underdog, Japanese admiral Tōgō Heihachirō. He fully trains Togo to the point where he successfully wins the All Alaska Sweepstakes, earning both Togo and himself some local fame.

In 1925, a diphtheria outbreak occurs in Nome; mostly affecting children. Mayor George Maynard plans to have the serum flown in from Nenana, but this proves to be impossible due to the severity of the weather. A meeting by town officials hears that air delivery is impossible due to the weather, and concludes that only Seppala has the skill to drive the 600 mile journey in such weather to collect the antitoxin. Eventually, Seppala is convinced to collect the serum and race back, and decides to take Togo despite the dog’s age (Togo is 12, which is old for a dog). Constance becomes concerned and says the journey will kill the dog, but Seppala insists on going, and tells her that without Togo leading the team, he himself would be unlikely to survive. Seppala and his team tread through stormy weather and take a break at an outpost where a local doctor named Atiqtalik tells him that Togo is tired. Seppala continues on for miles; taking a dangerous shortcut across the melting Norton Sound to save a day’s sledding. In the meantime after he leaves, a relay effort is set up to bring the serum back, with different teams running an average of 31 mile stretches each.

Seppala eventually meets up with a fellow musher, Henry Ivanov, who was bringing the serum to Nome as part of the relay, and is therefore able to leave back for Nome the next day. Seppala and his team head back across the Norton Sound again – a high-risk attempt to save time and strain on the dogs by taking a dangerous shortcut across the breaking ice. The team become stranded on a broken piece of ice near the shore, and he is forced to throw Togo to shore, where the dog pulls the entire ice floe to safety. The effort, and the ensuing run through the driving storm, exhausts Togo. Reaching Atiqtalik’s outpost again, she tells him Togo is dying. Nevertheless, Seppala gets his team back to Joe Dexter’s outpost as he, Togo and team recuperate. The serum is passed off to fellow musher Gunnar Kaasen who arrives back in Nome. A reporter, confusing him for being the sole musher, announces his dog Balto as the hero who saved Nome, disappointing Constance.