As winter comes to an early end, the Kilchers spring into action preparing the homestead. Eivin and August struggle to resupply the head of the bay. Jane and Eve embark on a ptarmigan hunt. Atz Sr. and Atz Lee build a weather station on Perl Island.
Otto surveys the condition of his rusting barge after a winter in drydock, while Eivin and Eve use explosives to clear land for a new root cellar. And later, Jane builds an innovative dogsled for Atz Lee.
To prepare for the spring cattle drive, Atz Lee, Otto and August survey the homestead for signs of bear and employ modern surveillance to track their movement. Eivin and Eve take the kids on a kelp-harvesting expedition and Atz Sr. goes bear hunting.
While collecting coal on the beach after a storm, Eivin & Eve find a capsized boat and immediately begin looking for survivors. Otto, Charlotte & August build a shelter for their calves and Jane brings the family together with a new spring tradition.
With predators stalking the homestead, the need for safe cattle grazing land is greater than ever. Atz Sr and Atz Lee head to Perl Island to begin plans for new pasture, while Otto and Eivin work to transport a small herd to the island by boat.
When Jane and Charlotte get word of a sick calf at the Head of the Bay, they trek through bear country to protect their herd. Three generations of Kilchers build a line shack on Perl Island, and Otto has a surprise for Charlotte.
Things get explosive when the Kilchers expand a road on their homestead with detonation expert Desmond Duffy. Later, Jane and Charlotte get stuck in the mud on a fishing trip while Atz Sr. and Bonnie brave the backcountry to salvage vital resources.
A backcountry winter wonderland is threatened when unseasonably warm weather brings rain to the homestead. But the Kilchers won't let the storm ruin their Christmas plans, and they adapt to throw a holiday celebration for the entire family.
Eivin and Eve discover a tangle of nets endangering fish in a nearby river, and launch a risky clean-up operation. Charlotte and Otto rebuild their rotting deck, leaving Jane and Jewel to pitch in elsewhere. And Atz Sr. goes on a solo hunt for moose.
Striving toward the Kilchers' tradition of preserving the old ways, Eivin guides August on his first-ever deer hunt. Etienne joins Atz Lee and Jane on his first big game hunt. Atz Sr. and Otto attempt to tear down and reassemble a historic barn.
The Kilchers get busy on outdoor projects to prepare for the winter months. Atz Sr., Eivin and Nikos scavenge for lumber while Atz Lee and Etienne mill wood. Jane and Charlotte build an enclosed camper and August creates a stunning, creative coop.
Eivin and Eve build an epic homestead-style treehouse. Atz Lee, Jane and Etienne stock their freezers with trout while Otto and August refurbish an old tractor. Atz. Sr. and Bonnie move a historic cabin onto the homestead.
Jane heads to the Arctic Circle hoping to bag a caribou before winter. Atz Sr. and Atz Lee butcher their island cows and haul the meat back home. Meanwhile, Otto, Eivin, Charlotte and August wrap up the season's final cattle drive.