The Kilchers confront the realities of the changing Alaskan climate. Atz Lee enlists Atz Sr., Otto, Eivin, Bonnie and Jane to help with his ambitions to build an all-new, remote homestead.
After a winter of record-setting warm temperatures, the Kilchers team up to tame the land. Otto and Eivin tackle turning raw wilderness into a source of food for generations to come. At the head of the bay, Atz Sr. battles the elements and a menace.
At the head of the bay, Atz and Atz Lee attempt to tame wild stallions. Meanwhile, on the spring cattle drive, Otto, Eivin, Charlotte and Jane must innovate to protect the calves and overcome threats to the herd.
There's no shortage of needs on the homestead in spring. Atz Sr. bow hunts to restock dwindling food supplies, while Atz Lee develops a new foothold in the wilderness. At the head of the bay, Otto, Charlotte and August scramble to protect livestock.
As the Kilcher family braces for summer on the homestead, Atz Lee treks to forbidding Perl Island for an emergency crash course in wilderness survival. Meanwhile, Jane fights with creatures from the deep for food, and Otto and Eivin attempt to build a sauna.
As spring draws to a close, Otto and August dig into a monumental plumbing project. Eivin attempts to help, but loses control of his truck. Elsewhere, Atz Sr. searches for two predators threatening the Kilcher property, and Atz Lee and Jane help Shane with his cabin.
The Kilchers pay tribute to the family's patriarch and matriarch, Yule and Ruth, by preparing a feast using strictly old-fashioned methods, including wood-fired goose and raw-milk butter.
A hot summer, following a dry spring, threatens the Kilcher cattle. Meanwhile, Atz Lee joins forces with a remote homesteading master to learn how to tame the frontier, while Jane comes face-to-face with bear, and toddler Findlay gets a safe place to play.
After a feverish summer of work, the Kilchers prepare for winter. Eivin scales treacherous peaks to fill his freezer, but it's Atz Lee who takes a fateful step, leading to catastrophe. Elsewhere, Otto's assistance with a cabin build takes a perilous turn.
The Kilcher family and friends endure unexpected adversity, while Otto and Charlotte's rescue mission to Halibut Cove brings jeopardy on the seas. On the homestead, Atz Sr., Eivin and friends come together in a massive effort to help Atz Lee as he begins the painful journey home.
The Kilchers create homemade Christmas gifts for their significant others. Otto surprises Charlotte with an explosive gift, Jane builds a musical present for Atz Lee and Eivin constructs a dual-use vehicle for Eve and Findlay.
As fall comes to a close, Atz Lee confronts the reality of recovering from his accident, while Eivin and Jane venture miles at sea in search of massive halibut. Elsewhere, the rush to complete the fall harvest puts Eve and Otto in harm's way.
The Kilcher homestead is brewing with new beginnings. Sparks fly between Otto and Charlotte while building a staircase, and Eivin and Eve welcome the newest member of the family. Meanwhile, Atz Lee crosses a critical bridge on his road to recovery.
The Kilchers find themselves unprepared for winter's arrival. Led by Otto and Charlotte, the family's cattle trek a cold and deadly path. Elsewhere, Shane risks losing a year's progress on his unfinished cabin, while the family embarks on two massive hunts.
Otto receives a terrifying house call from a county doctor, while the family joins forces to protect Shane's cabin from winter's fury. At the hunter's cabin, Atz Lee's return is rudely interrupted, and he turns to a veteran homesteader for help.
A never-before-seen, lost episode travels back to before Atz Lee's near-fatal accident, as he plans a surprise ceremony to renew his vows with Jane. Meanwhile, the other Kilchers struggle preparing for the big event and secretly journey to the head of the bay.