A wolf pack continues to encroach. Charlie's only option is to pursue the pack leader. Joey deals with consequences of Alaska's unusually warm winter and turns to his dad for help. Nations thinks the Moore's mushing team is running with the wrong leader.

Stan must build an ice road across the Yukon River; Joe and Bob embark on a caribou hunt; Charlie confronts Nations

The pressure is on Nations, when the Moores head out for the first major dog sled race of the season. Stan faces a hard decision when one of his dogs falls ill. Charlie has had enough once he sees the state of the trapline he handed over to Nations.

Stan and Pat race to prepare Tanana to be a checkpoint for the Iditarod dogsled race; Charlie and Bob hunt a grizzly that has been terrorizing a miner's camp; and Joe hopes to turn his new pooch into a hunting partner.

Nations and Charlie argue over rights to a family trapline; Stan and Kathleen try to upgrade Tozi cabin, but get more than they bargained for; and the Moore's kennel is on the line as Courtney and Nations race in the Yukon River Championship.

After a poor trapping season, Charlie Wright teams up with Stan Zuray in a last-ditch effort to catch beaver. Also: Stan and Joe Zuray discover a large predator has been stealing from them; and James Roberts teaches his sons the importance of hunting.

Unseasonably thin ice prevents villagers from reaching valuable hunting grounds, forcing Stan and Charlie to carve a new path through the rugged Alaskan wilderness in search of food. Desperate to provide for his family, James takes a huge risk!

The Yukon River breaks up earlier than ever. Despite dangerous conditions, Joey crosses the river to hunt geese. Stan and Bob prepare the village for imminent flooding due to the break up, when they something very disturbing.