With winter coming to an early close, 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.
For the first time since blasting Kilcher Road, Eivin attempts to haul a huge pole barn back to his homestead. Jewel and her son arrive for a visit - and a surprise from Atz Sr.- and August builds a one-of-a-kind outhouse.