Marty returns to his trap line to find it destroyed by wildfire. Mike hunts an elusive herd of Kodiak elk. Lauro and Neil Eklund journey down the Yukon River by log raft on a quest for beaver and fish. Cub prepares for a winter of isolation at his remote coastal cabin. Bret and Ivy traverse a risky shortcut, and uncover a prize set of moose antlers on their Alaska Range trap line.

Marty instructs his teenage daughter, Noah, as she pilots the bush plane. Mike hunts a herd of Kodiak bison, and donates the meat to friends in town. Lauro and Neil check their traps and fishing nets on the Yukon River. Cub forages for shellfish and edible plants. Daniel sails through stormy seas while on a deer hunt to feed his family of six.

In the interior, Marty Meierotto puts the stalk on a group of caribou, but the hunt takes a wild turn when a family of grizzly bears comes charging toward his camp.

Marty embarks on a moose hunt, luring a bull within his sights; Mike's relentless pursuit of foxes yields a collection of prize pelts; as Bret sets his sights on trapping wolves, Ivy balances duties at the homestead.

Marty has a near death experience when he plummets through ice on a frozen waterway; meanwhile, Lauro journeys deep into the untouched backcountry by dog team to establish an expedition camp.

Buried under record snowfall, Marty fights to heat his cabin and maintain his trapline; Lauro and Neil brave the icy Yukon River with their sled dogs, while Mike ingeniously crafts a driftwood windmill to power his homestead.

Marty digs his bush plane out from a deep snow drift to preserve his one lifeline in the bush; Bret and Ivy escape an avalanche from their cabin roof before embarking on their journey back to home base.

Marty escapes a blizzard and flies home from the trapline to reunite with his family; Lauro runs a 100 mile dog race and gets closer to qualifying for the Iditarod; Daniel takes down a black bear to provide meat for his family.

Marty searches for a bull moose that vanished in thick brush; Mike packs the meat from a bull elk.

Lauro travels north with his team of sled dogs to hunt caribou; Daniel rebuilds a cabin.

Lauro hunts caribou in white-out conditions on Alaska's North Slope.

Marty battles the brutal Alaskan winter while running his wildfire ravaged trapline in the Far North.

Lauro kicks Iditarod training into high gear with a 300-mile run on the Denali Highway and Bret.

Mike braves icy waters to catch snow crabs living on the seafloor hundreds of feet below the surface.

Marty withstands a brutal cold snap and Mike carves a narrow road out of a steep ridge.

Lauro begins the 1,000-mile Iditarod with his sixteen-dog team, pitted against harsh conditions and rugged terrain in one of the toughest races on earth.

Lauro continues his quest to complete the Iditarod through Alaska's frozen interior and Bret and Ivy pursue a bear into dangerously steep terrain.

Lauro confronts -40° weather, a broken sled and exhausted dogs on the Iditarod Trail while running down the frozen Yukon River. Bret and Ivy haul beaver to finish the season and Tom and Jack carve a traditional peace pipe from rare catlinite stone.

Lauro nears the end of the Iditarod, crossing 260 miles of ice along the Bering Sea coast to reach the finish line in Nome. Marty and his friend Dave haul supplies for a cabin into the backcountry and Tom and Will build an elk hide tipi.

Marty ends a failed season with a blockbuster catch; Tom stands his ground against a powerful beast; Preston and Eustace fight fire with fire to lay down roots for the next generation.

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; Jason takes River on a mountain rite of passage.

Tom and Nancy create a masterpiece out of a raw wolf hide; Jake and his young dogs tangle with two mountain lion kittens; Eustace teaches his neighbours how to put food on the table; Mike goes full fur on Whale Island; Josh gets caught in an ice jam.

Morgan stakes out his next meal to battle starvation; Marty finds an unexpected jackpot.

Tom washes out in Idaho and retreats to the Yaak. Eustace races to stop a breakout and Morgan battles predators large and small.

Winter descends on the mountains without mercy; Marty is trapped in 50-below weather; Morgan and Tom forge new alliances; Rich battles a rogue grizzly.