As winter approaches, Morgan battles a bear-infested island for a critical head start on the season; Tom is caught in Montana's deadly wildfires; Eustace wrestles with the aftermath of Preston's death, and the Hawk clan prepares for a life-changing arrival.

The bears keep Morgan on the run as he tries to secure his catch and escape with his life; Eustace struggles to get back to work without Preston; Jason and Mary prepare for their due date; Tom scales treacherous terrain and Jake readies his team to face down the lions.

In a risky bid to get out of the red, Marty fights to reclaim his long-abandoned turf; Morgan races to build a shelter in the snow and ice of subzero Alaska; Eustace gets a boost in horsepower; Jason and Mary brace for a home birth; and Jake's lion hunt takes a dangerous detour.

Morgan gets a crash course in extreme winter flying; Marty battles a predator invasion; Tom faces a new wolf threat; Jake and his hounds hunt a rogue lion; and Jason steps in to bring a new life into the world.

Tom takes the fight to the wolves; a lion chase claims a casualty; Morgan builds bigger; and Eustace goes to battle to defend his land.

Marty brings in a record haul; Margaret's extreme flight training leaves her out in the cold; Tom puts his master craftsmen skills to work; and Jake chases his next meal.

Tom returns to the field on a rescue mission; The deep freeze leaves Morgan and Margaret scrambling for water; Eustace takes on a risky payday in a bid to buy his neighbor's land; and Jason's improvised engineering is a game-changer in the forge.

Eustace battles a beast to bring home a bonus payday; in pursuit of a lion Jake's team is left hanging on a cliff's edge; Marty gambles on the ice to make bank, and Mike fights to survive the dangers of bears-infested Kodiak.

Morgan's first flight over the peaks leaves him in a dead skid over the edge; Marty fights to double down on a big payday; Eustace bites off more than he can chew to get the job done; and Jason takes River on a mountain rite of passage.

A mid-winter melt threatens to derail Tom's season; Eustace masters gravity to keep the water flowing at home; Jason and Mary make a move to feed their growing family; Morgan and Margaret top off a major project; Mike cashes in on a rare find. Written by Alexandre Julien

Marty brings out the big guns for a final frenzied push out of the brush; Morgan and Margaret make a major breakthrough; Mike battles Kodiak's most treacherous mountain; Jake faces down a pair of predators; Jason fuels the forge.

A massive week-long storm tears Morgan's homestead apart; Mike goes on the offensive for the annual awakening of Kodiak's bears; Tom takes on a custom order to celebrate an important milestone; Jason builds a Viking axe.

When a massive mid-winter storm tears across Alaska, Marty pushes his machine to the limit; Morgan and Margaret race to make the cut before the snow hits; Eustace revives a lucrative business venture; Jason discovers a hidden bladesmith's bounty.