In the early 1928, Dingo followed the smell of minks to a small cargo ship at the seaport. He makes it onto one, not knowing that its ready to leave in just seconds! The ship takes off, Dingo howls for some help, Jenna, nearby races to him, but the farthest she can see with her aging eyesight was that one of the cargo crates said "Eastern Soviet Union."
She tells Balto the news, Balto tells her he will find him with Duke's help. Balto first headed around town trying to repeat after humans are talking, so he could try to communicate with them, but he just still barks, and howls and barks. After trial and error, he manages to bark understandably by the humans! That's how he told Duke that he needs to go rescue his son.
Balto later goes on with Duke to the Soviet Union, but Duke forgets to refuel and they are forced to land in a nearby open field of snow. They continue on foot.
Meanwhile with Dingo, he gets shipped to a town that had a huge bunch of people and dogs! he gets welcomed nicely and then later gets to speak with the town's Top dog, Steele. Steele notices him looking familiar. Then he asks him if he's Jenna's son, and if Balto...