Marty guides Noah through her first bush plane landing at a remote caribou camp while 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 while 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.

Lauro guides his dog team through frozen wilderness to reach Neil at a remote trapping camp. On his homestead, Mike digs a root cellar into the hillside. Ivy hunts grouse while Bret preps for the upcoming season by building and boiling his gear. Chance and Soraya begin building a log barn to shield their livestock from winter. In Montana, Jake makes a daring climb to save one of his stranded dogs.

While hunting for meat, Mike crosses paths with a prowling brown bear and her cub. Chance races the first snow to finish his livestock barn. Lauro and Neil smash through thick river ice to harvest beaver and fish. Bret and Ivy scale their cabin roof to install solar panels and power their homestead with clean energy. Meanwhile, Paul hits the jackpot on his coyote and beaver traplines.

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; Chance works to support his family through sub-zero temperatures on the trapline while Soraya prepares for the imminent arrival of their new baby; after a lifetime in the wild, Tom finally contemplates retiring from trapping; Jake has a terrifying day when his dog takes a 50-foot dive from a tree.

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 wrong turn in the dark; Bret and Ivy ascend high into the Alaska Range to hunt dall sheep.

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 bear invasion; Chance makes a push into uncharted territory on his trapline; Jake corners a tomcat.