Marty guides daughter Noah through her first bush plane landing at a remote caribou camp and Mike hauls a 50-foot gangway across land and sea to his Kodiak homestead.
Marty flies to new hunting grounds in search of an elusive caribou herd and Lauro and Neil build a trapping and fishing camp to help feed their sled dogs.
Chance and Soraya slaughter a ram to provide meat for their growing family and Lauro begins preparation for this year's Iditarod by taking his team on a fall training run.
Bret and Ivy bust through sheets of lake ice to ferry critical equipment to their cabin by boat and Lauro and Virginia use the dog team to haul fresh cut timber from the forest for a log cabin build.
Mike journeys to an uninhabited island to hunt a herd of wild buffalo with help from the local natives; Lauro pushes himself training for the upcoming Iditarod with a grueling 260-mile run through the Alaskan wilderness.
Lauro begins the longest Iditarod in the history of the famous sled dog race; Mike hunts elusive and rare silver foxes along the shoreline of Kodiak Island.
Marty rebuilds a snowmobile from scratch, before facing off with a wolverine menace on his trapline; Lauro feels the fatigue on the Iditarod trail and makes a costly wrong turn in the dark.
Lauro barrels to the finish line of the Iditarod along the frozen Bering Sea coast; Mike fights to salvage his Kodiak Island homestead after a catastrophic bear invasion.
