Alaska: The Last Frontier - Season 4

The Kilchers face fallout from the warmest Alaskan winter in decades. Atz Lee & Eivin tackle an emergency mission to secure their cabins at the head of the bay.

Atz Lee & Shane struggle to move a two-ton bridge to ensure crossing of glacial rivers, while Otto & Charlotte fight a serious threat to their cattle.

Atz Lee and Jane encounter disaster in a hunt for Jane's first black bear. Atz Sr, Bonnie & Shane defend the head of the bay against grizzlies.

It's spring, and life is returning to the homestead. But with temperatures soaring things are far from normal. Tensions reach breaking point and the annual cattle drive.

Atz Lee and Jane venture out in a risky hunt for black bear, but instead come face to face with a grizzly. Plus, Otto and Eivin introduce new bulls into the herd.

To fill their freezer, Atz Lee and Jane chase the first salmon run of the season, while Otto and Eivin fix the homestead's defences to contain their cattle herd.

Otto, Charlotte, Eivin & Eve harvest a cow to stock up on meat for winter. At the head of the bay, Atz Senior's range riding skills are tested.

Homesteaders who work together, give thanks together. The Kilchers celebrate Thanksgiving with the friends who helped prepare the homestead for winter.

The end of summer leaves little time to complete winter preparations. To heat the cabin, the family must transform raw metal pipes into a working chimney.

Otto, Jane & Shane transport a cabin to the distant and uninhabited Perl Island. But things take a sinister turn when they discover a predator on the loose.

The Kilchers put their own spin on a Secret Santa gift exchange: hand-making something useful for someone in the family, from a crossbow to explosives.

The Kilchers work together to ensure the homestead's survival: from having each other's back during bear hunts to surviving fishing expeditions gone awry.

Otto, Eivin and August scramble to stake a claim on 10 tons of priceless steel on a distant beach. Meanwhile, Shane and Kelli break ground on their cabin.

Changing weather forces the Kilchers to venture miles from home in search of food for winter. Eivin and Eve stalk big game above the clouds.

The Kilchers pay tribute to a fallen friend by driving cattle back home. Atz Lee winterizes the Hunters Cabin, preparing to move further off the homestead.

With bear season nearly over, the pressure is on Jane & Atz Lee as they set out for their last hunt of the year. Atz Sr. & Bonnie encounter a black bear of their own.

At the head of the bay, Atz Sr. has wild game in his sights. Meanwhile, Atz Lee and Jane tackle a long-overdue task to secure their cabin for the winter.

The Kilchers make final preparations for winter. Eivin, Atz Lee, Jane and Shane embark on an epic group hunt for deer to fill their freezers.

Eivin and Atz Lee travel to Shuyak Island to acquire meat. Meanwhile, Otto and Eivin deploy the excavator to free themselves from a sandbar.

The cattle are the lifeblood of the homestead. While super bull 13-08 survives near-death experiences, Otto transports a new bull to the head of the bay.