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 flies to new hunting grounds in search of an elusive caribou herd and Lauro and Neil build a trapping and fishing camp to help feed their sled dogs.

Chance and Soraya slaughter a ram to provide meat for their growing family while Lauro begins preparation for this year's Iditarod by taking his team on a fall training run.

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.

Marty wraps up trapping season with a record haul; Morgan flies solo for the first time over the Great Alaska Range; Tom battles rapids on the Kootenai River; Eustace tries to raise a down payment to buy land.

Tom goes for one final ride on the trapline to pull his last sets before passing the torch to Sean and Hank; Jake has a showdown for the ages when three lions are cornered in a single tree; Marty makes a last ditch run at the wolverine that has decimated his trapline all season; Lauro explores the Arctic sea ice by dog team and hunts caribou on the frozen tundra; Mike races to rebuild his cookhouse in the wake of a devastating bear invasion.

Lauro embarks on a new solo adventure with his dog team across the unforgiving Arctic wilderness; Bret and Ivy run into trouble when their traps vanish under several feet of solid ice; Chance's bold push into new trapping territory pays off big, leaving him and Soraya with a haul of marten to skin; Jake chases down the giant tom lion that gave him the slip a week earlier; Paul taps the raw power of pure skunk essence to concoct his most potent trapping lure yet.

Bret and Ivy bust through sheets of lake ice to ferry critical equipment to their cabin by boat and Lauro and Virginia use the dog team to haul fresh cut timber from the forest for a log cabin build.

Tom Oar shares his hard-earned survival secrets forged through a lifetime of experience living in the wild.

Josh battles a blizzard and an onslaught of predators to protect his bison; Kidd and Harry navigate dangerous rapids to rescue a stranded pack mule; Jake responds to a mountain lion attack at a local ranch; Tom and Nancy help open a new trading post in the Yaak; Mike has a close encounter with a bear while repairing an old hunting cabin.

While hunting for meat, Mike crosses paths with a prowling brown bear and her cub. Chance races the first snow to finish his livestock barn. Lauro and Neil smash through thick river ice to harvest beaver and fish. Bret and Ivy scale their cabin roof to install solar panels and power their homestead with clean energy. Meanwhile, Paul hits the jackpot on his coyote and beaver traplines.

Tom turns coyotes into cash; Eustace and Raleigh take to the forge to raise money for roofing materials; Mike scouts bears for the spring hunting season; Morgan and Margaret go fishing.

Tom Oar struggles with heart problems but refuses to give up his way of life; Jake Herak and Anika Ward have added five new puppies to their pack; Martha and Elli Tansy pack hundreds of pounds of meat; Mike Horstman hunts fox for their fur.

Tom and Nancy face the challenges of isolation at the onset of winter; Jake hunts pronghorn antelope, and faces down a deadly rattlesnake; Eustace has new neighbors and begins teaching them his mountain man ways; Mike takes a perilous sea journey in search of better hunting grounds; and Martha puts her off road capability to the test while traversing Alaska's toughest terrain.

Josh witnesses a bison give birth to the first calf of spring; Kidd and Harry load a mule into their boat and transport it downriver through raging rapids; Jake runs two mountain lions up the same tree; Eustace receives help from his neighbors as they rush to repair the roof of a damaged hay barn; Mike adds off-grid utilities to his remote hunting cabin.

Marty guides Noah through her first bush plane landing at a remote caribou camp while Mike hauls a 50-foot gangway across land and sea to his Kodiak homestead.

Tom Oar reunites with Sean McAfee to set his winter trap line, but miles of grueling terrain put the veteran trapper's endurance to the test; in Alaska, Martha and Elli Tansy embark on an off-road expedition to new hunting grounds.

On his 80th birthday, Tom builds a teepee while Nancy plans a surprise party.

Morgan's big day goes bust when his plane breaks down; Mike's supply run across the bay leaves him high and dry; Tom takes on a rare high value commission; Jake's dog team hunts down two lions in a marathon high-speed chase.

Lauro guides his dog team through frozen wilderness to reach Neil at a remote trapping camp. On his homestead, Mike digs a root cellar into the hillside. Ivy hunts grouse while Bret preps for the upcoming season by building and boiling his gear. Chance and Soraya begin building a log barn to shield their livestock from winter. In Montana, Jake makes a daring climb to save one of his stranded dogs.

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.

Tom packs a traditional muzzleloader on a winter deer hunt with Sean and Hank; Jake and Anika complete a successful elk hunt with a backbreaking pack out; Aron and Jen cut down dead trees that threaten to destroy their cabin.

Winter has finally come to a close, spelling big changes for Tom, who bids farewell to an old friend and packs his bags for Florida. In the Ruby Valley, Rich grooms his youngest hound to take over the pack, but an influx of cougars finds the pup in over his head. In North Carolina, Eustace takes a dangerous trip down a rapid river to deliver the canoe he built to pay off his loan. In Maine, Charlie takes his furs to market and hopes to break even on his rookie season, while in Alaska, Marty enjoys a reunion with his family, then makes big plans for the future.

Morgan's horses go missing just as the local bears wake for spring; Rich's marathon lion hunt turns into an epic chase; Tom goes after America's largest game.

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.

As the bitter cold pushes predators to the edge, Tom is caught in a close range battle while Rich goes head to head with a pack of wolves.

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

Tom begins the countdown to his 80th birthday; Jake and Anika tow a broken snowmobile down the mountain but run into fresh lion tracks and are back on the hunt; Paul sets out to take on a wolf pack.

Josh hits the jackpot; Tom puts his handmade dugout canoe to the test; Jake makes his last stand against a massive predator; Eustace sees his dream of keeping his new land go up in flames; Kidd and Harry secure their future in the mountains.

Tom and Sean face off against a coyote threat; Eustace and Raleigh enlist some much-needed help building their lookout cabin; Jason takes one final crack at creating Ozark steel; Morgan and Margaret push deep into the back country.

Kidd and Harry traverse through intense whitewater to reach the spawning grounds of steelhead trout. Jake loses his dogs after they follow lion tracks into remote and unfamiliar territory. Paul checks his traps and takes home the biggest prize on the mountain. Eustace mills massive beams to repair a deteriorating dock at a local marina. Aron and Jen mill all their own lumber and rebuild a cabin roof.

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.

Jake sets off alone on the hunt for elk meat; Jason rolls the dice on an experimental smelter; Morgan and Margaret combat a critical water problem; Mike targets Kodiak Island's most dangerous quarry; and Marty bids a final farewell.

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.

As the spring melt sweeps the mountains, Jake sets his sights on bagging a black bear for the larder; Eustace and Raleigh race against time and weather to plant crops; Mike sets out to harvest a bounty from the Gulf of Alaska; Kidd and Harry drop and haul lumber for their ranch; and Jason puts his homestead expansion on hold when a tornado comes crashing through.

As winter closes in, Morgan and Margaret fly North to track down the great caribou migration and secure meat; Marty preps his trapline for the arrival of his daughter, Noah; Jake starts his season tracking two lions. Eustace takes on an apprentice and uncovers some illicit activity on his new land; Kidd and Harry rescue horses from a pack of hungry wolves.

Jake hunts a lion caught stalking a school bus stop; Tom sets out to end his trapping season on a high note; Eustace and Raleigh struggle to put a roof on their outpost cabin; Morgan and Margaret prepare their horses for a critical supply run.

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.

Kidd and Harry set their sights on bagging a buffalo; Jake goes after a mountain lion caught too close to civilization; and Morgan fights the deadly skies of Alaska in a race to resupply his homestead.

Lauro barrels to the finish line of the Iditarod along the frozen Bering Sea coast; Mike fights to salvage his Kodiak Island homestead after a bear invasion; Chance makes a push into uncharted territory on his trapline; Jake corners a tomcat.

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.

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.

Tom instructs young Hank on some essential Mountain Man skills. Newlyweds Jake and Anika hunt elk in the bone chilling cold; Paul takes on an infestation of nuisance badgers; Ray uses bushcraft technology to haul his elk meat out of the backcountry; Aron and Jen clash with a pack of wolves prowling the outskirts of their homestead.

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; Mike fights to survive the dangers of bears-infested Kodiak.

Kidd and Harry battle time and rough terrain on a backcountry supply run; Jake and his dogs track down a repeat offender; Tom gets back to business in the Yaak; Morgan checks his remote trapline for high-dollar fur.

Lauro begins the longest Iditarod in the history of the famous sled dog race; Mike hunts elusive and rare silver foxes along the shoreline of Kodiak Island; Chance works to support his family through sub-zero temperatures on the trapline while Soraya prepares for the imminent arrival of their new baby; after a lifetime in the wild, Tom finally contemplates retiring from trapping; Jake has a terrifying day when his dog takes a 50-foot dive from a tree.

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.

Morgan's first flight to the homestead hits a wall of bad weather; Mike fights icy currents and fading daylight to get supplies back to his cabin; Tom runs a gauntlet of timber and brush in search of some late season fur; Eustace revives his furniture business to make some fast cash; and Jason forges salvaged airplane parts into high-end cutlery.

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.

Mike flies into the Kodiak backcountry in search of rich bear hunting grounds; Jason rushes to complete a barn before his new herd of goats arrive; Kidd and Harry hunt down the bear that attacked their cattle; Josh creates a water supply for his growing herd of bison; and Jake turns his bear kill into food stores and profit.

Tom ventures into new territory for beaver, and sets a personal record; Jake puts his young dogs to the test, but one goes missing on the mountain; Kidd and Harry navigate a gauntlet of river ice on a mid-winter fishing expedition; Mike risks being left stranded as he struggles to pack out 500 pounds of feral cow meat; and Josh harvests a bison in preparation for a high stakes taste test with a local butcher.

Eustace Conway and others try to obtain the food and supplies to make it through winter.

Tom pays the price for two consecutive failed winters. Morgan calls in reinforcements for his horses. Eustace and Preston harvest a hog and Rich makes a pick of the litter.

In Alaska, after spending the night under the stars in subzero conditions Marty struggles to get his snow machine out of a stubborn overflow. In the Ruby Valley, Rich takes his oldest dog, Brandy and youngest dog, Hatchet, out on a special training mission. Eustace and Preston set off on a crucial deer hunt, but are interrupted by loud intruders. In the Yaak Valley, Tom is called by his friend, Tim to help with a beaver problem and takes the opportunity to teach an important lesson; and in Maine, Charlie and Jim head to the frozen river to carve out 100 pound ice chunks for Charlie's root cellar.

Jake's second mountain lion chase in the Ruby Valley leaves him cliffed out; Eustace and Raleigh turn scrap steel into pure profit; Kidd sets off on a whitewater excursion unlike any other; and Jason picks up the pieces after a storm drops a tree.

Jake's latest mountain lion chase leads him to an angry bear; Tom and Jack take on a commission to build an ancient atlatl; Jason builds a steel trap to keep the area's wild hogs in check; Kidd transforms a large wooden boat into a summer cabin.

A predator comes back when Tom can least afford it; Marty runs out of daylight; Rich fights back the wolves.

Jake will do anything to get his injured dog to the vet; Tom and his brother are left high and dry when the well on his ranch stops pumping; Mike has to go back on the hunt after bears pillage his provisions.

Tom struggles to keep a deadly wolf pack off his land despite an injury. Rich tracks a large buck over tough terrain on his mid-winter hunting trip. Eustace makes some much-needed repairs and George is forced to make his way across the Tetons on foot across before bad weather hits.

Tom heads down to Idaho to help his brother break a pair of wild colts. Charlie Tucker returns to action after his shoulder injury, and puts his recovery at risk on Maine's frozen Rowe Lake. Rich sets off on a cougar hunt but ends up having an unexpected run-in with a bear instead, and George continues his frustrating search for food by the Snake River.

Mike climbs Kodiak Island's highest peaks to take down a mountain goat, then repels down sheer cliffs to bring home his harvest. Martha and Elli use their tracked vehicle to scout new hunting grounds.

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

Charlie spends the night injured and alone in Maine. In Montana Tom investigates signs of a predator lurking too close to home. Eustace rushes to raise money to make his loan payment. And in Idaho, new mountain man George Michaud tries to make a living running his dog sled through the peaks of the mighty Tetons.

Kidd and Harry Youren use explosives to battle a deep freeze to protect their cattle's drinking supply; Jake Herak's young pups learn a big lesson in lion hunting; Josh Kirk takes aim at a pack of coyotes messing with his bison.

In the Yaak Valley, Tom Oar teams up with his brother Jack to help return Jack's prized hunting falcon back to the wild. In southern Montana, Rich Lewis and his wife Diane need to move their cattle herd, but will the predators get to them first? Marty starts wrapping up a successful season, but the elements won't let him leave Alaska without a fight. Eustace and Preston realize they have to contend with coyotes who are putting their wild game at risk. And in Maine, rookie Charlie Tucker struggles to re-start his season after an injury left him with one working arm.

Desperate for food after a grizzly bear ravaged his garden, Tom Oar embarks on a last-ditch deer hunt. Marty Meierotto begins to establish his winter trapline, breaking fresh trail in the uncharted wild. In the Ruby Valley of Montana, Rich Lewis pursues a marauding wolf pack that has slaughtered a neighbor's cattle. And in the Blue Ridge Mountains of North Carolina, Eustace Conway must deal with Scout, a careless intern with "a dose of city boy in him.

Rich's cougar hunt takes a dark turn in Montana. Marty competes with a wolf pack for food. Tom and Will race an oncoming storm that puts them in jeopardy. And in Maine, Charlie suspects sabotage.

Tom Oar tries to save a friend's water supply and hunt his winter's meat surrounded by grizzlies. Eustace Conway deals with the threat of someone trying to take his land. Marty Meierotto combats life or death situations due to breakdowns.

In Idaho, Kidd and Harry Youren navigate the raging rapids of the Snake River to deliver a scow boat to its new owner. In Montana, Tom Oar teaches 9-year-old Hank McAfee all about trapping. Jake Herak unleashes his young pups on the Mountain Lions of the Tobacco Roots but takes a nasty fall high in the backcountry. Eustace Conway uses all his backwoods skills to build the ultimate firepit for Turtle Island.

Marty installs floats on his bush plane and flies to a remote lake to hunt moose.

Marty Meierotto arrives at his Alaska trapline, but the unseasonably warm weather is impeding his plans. In North Carolina, Eustace Conway discovers two headless chickens in his henhouse, and begins a hunt for the predator responsible. In northwest Montana, Tom Oar discovers a grizzly bear has been prowling his property, while in the southern corner of the state, Rich Lewis frantically searches for his missing hound, Turbo.

In North Carolina, Eustace Conway's land is in jeopardy, so he saddles up and rides into town to make his final stand. In Alaska, Marty battles weather and wind as he attempts to feed his family and make it back home alive. And finally, Tom Oar's under the gun to finish his goods when an unwelcome bear threatens his family.

Winter strikes and Morgan hunts for riches in the ruins; Jason tackles a river giant; and Eustace makes a breakthrough with black powder.

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

After a successful deer hunt, Tom rushes to prepare the meat before it attracts hungry grizzly bears. In North Carolina, Eustace takes on a grueling job that he needs to complete in order to make his first loan payment. Marty's mechanical problems return and leave him stranded in the cold Alaskan night. In Montana's Ruby Valley, Rich postpones an elk hunt when he discovers evidence of a lion poacher. Rookie mountain man Charlie Tucker begins his trapping season in Maine's Great North Woods.

Eustace struggles to accept the reality of his injuries. Marty scrambles to recover from a costly blow and Tom finally makes a breakthrough.

Morgan fights to stay afloat on a treacherous river run; Jason loses everything; routine training turns to live combat for Rich's dog team.

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; Jason's improvised engineering is a game-changer in the forge.

The Mountains of North America haunt the imagination, masking a danger few are willing to confront. Despite the challenges, some choose to live this way, the last of their kind. Eustace Conway lives deep in the mountains of North Carolina. He moved here 33 years ago in search of a more "truthful" existence. In the years since, he's built a home, and survived by hunting, fishing and raising animals. Tom Oar lives with his wife on the Yaak River in Montana. He is 100 miles from the nearest town, a place he hasn't ventured to in 10 years. Marty Meierotto, his wife Dominique and their daughter Noah live in the small Alaskan town of Two Rivers. Every month, Marty pilots his bi-plane, traveling into the bush in search of the wolverine and lynx pelts he needs to make a living. While he's on the Black River, he must hunt moose and caribou to survive in the wilderness. Together, these men represent America's true MOUNTAIN MEN.

As winter tightens its grip on the nation, the mountain men fight the elements to stay alive. In New Mexico's Cimarron Valley, Kyle Bell and his son Ben scramble to save a herd of bison from a fast approaching winter storm. In North Carolina's Blue Ridge Mountains, Eustace Conway and his friend Preston brave the wettest winter in decades to stop a dangerous landslide from washing out a rural road. In Montana, Tom Oar prepares himself for the fight of a lifetime after a run in with a pack of wolves while Rich Lewis braves a blizzard to put meat on his table for the winter. And deep in Alaska's wilderness Marty Meierotto and his family settle into their new remote surroundings.

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

Morgan's land fails to provide, leaving him locked in a life or death battle with hunger. Tom's bad luck streak continues into a new season. Rich takes a bruising fall.

Tom takes on the Snake. Marty's new opportunity goes up in smoke and Eustace takes a hard fall that puts him out of commission.

Tom must postpone his work in order to hunt for meat to sustain him during the winter months, but predators are looming; Eustace needs assistance in protecting Turtle Island's most valuable resource; Marty may not meet his fur deadline.

Morgan is sidelined while he gets back on his feet; Marty fights to stay in the game; Eustace makes a critical trade to protect his future.

Rich and his hounds track Rich's nemesis, the killer mountain lion Three-Toes, across the length of Montana's Ruby Valley. In Alaska, a young prot g brings Marty the new snowmobile engine he's been waiting for. Eustace races the winter frost to seed his field in North Carolina and in Northwest Montana, Tom receives a commission from a neighbor to build a primitive bow, with a deadline that puts his endurance to the test.

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.

In the Revelation Mountains of Alaska, Marty is forced to make a dangerous river crossing to return to base camp. In Maine, Charlie battles a coyote to protect his new trapping ground. Tom hunts down a nuisance animal in Montana's Yaak Valley and Eustace races against a storm in North Carolina to bring his horses to shelter.

Logger turned Mountain Man, Charlie Tucker's luck takes a turn for the worse in the sub-zero North Maine Woods as a rookie mistake nearly costs him everything. In Alaska, Marty and Andy split up to cover more ground with the plan to rendezvous at dusk. But as night falls, Marty is missing in action. In North Carolina, Eustace puts his life on the line to help a neighbor in need, and in Montana's Ruby Valley, Rich Lewis sets off after a bobcat which has been eating his livestock, and the cat draws first blood, injuring two of his dogs before Rich vows revenge.

Tom and Nancy divide and conquer to get ahead. Eustace makes a breakthrough with his lumber business, while Morgan's luck finally turns around.

Morgan races the ice to gather critical supplies; Eustace digs out from a devastating tornado; Marty takes to the air in a bid to win the season.

Morgan climbs into the dangerous Alaska Range; Rich goes to war with the wolves.

In the Yaak Valley of northwest Montana, the worst fire season in living memory threatens the home of Tom Oar. In Alaska, Marty Meierotto flies into the heart of a vicious storm on his annual journey to his remote winter trapline. Turtle Island, Eustace Conway's refuge in the Blue Ridge Mountains, comes under threat from developers. And a new mountain man, lion hunter Rich Lewis, leads his dog team through Montana's Ruby Valley in pursuit of a deadly puma.

Tom and Sean brave the bitter cold in search of better trapping grounds; Jake seeks revenge on the lion that injured his hound; Eustace and Raleigh struggle to fix a storm-damaged bridge that connects Turtle Island to the world outside; Mary forges her first Ozark blade; and Josh loses a bison to a pack of hungry wolves.

This season opens as a polar vortex sweeps across the nation and plunges America into a brutal early winter. Tom Oar is behind on his winter preparations because he's spending time with family in Florida and facing a possibly life-changing decision. Will he sacrifice leaving the mountain man lifestyle behind to live closer to his family? In the Ruby Valley, a bloody encounter with a mountain lion leaves Rich Lewis's lead hunting dog Brandy in a life or death situation, and could end her career forever. Marty Meierotto takes advantage of a break in the harsh weather to embark on his annual trip to the Great Alaskan Range, but this year instead of leaving his wife, Dominique and their daughter Noah behind he's taking them with him. And in New Mexico's rugged and relentless High Desert, we meet Kyle Bell who is teaching his son Ben the dying ways of the mountain man lifestyle.

Marty is stranded in the Revelation Mountains with one last chance to get home, while Kyle and Ben launch a nighttime stakeout to stop a predator.

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.

In Montana, Tom Oar and Sean McAfee race to preserve a valuable buffalo hide, while Nancy makes a pair of custom moccasins. In Alaska, Martha and Elli Tansy transform a secondhand truck into an off-road beast for hunting season. Mike Horstman battles the tides to tow his wrecked boat to a protected cove. In Wyoming, Josh Kirk rounds up a group of escaped bull bison, and administers lifesaving medicine to a sick member of the herd. In North Carolina, Eustace Conway trades high end lumber for guns, and builds a new shooting range for Turtle Island to train the next generation of hunters.

An early melt halts Marty's record run; Tom receives a surprise boost; and Eustace tries to finish a logging job before spring.

Tom calls in some help to bail him out; Morgan battles to survive in the deep freeze. A father pulls out all stops to secure his family's future.

A breakdown leaves Marty stranded after dark; Eustace must improvise when he comes up shorthanded.

Kidd and Harry go toe-to-toe with a one-ton bull; Eustace and Raleigh dig for Turtle Island's food stores; Mike braves the Kodiak interior on a bear scouting mission; Jason schools his two oldest kids on fishing and survival in the Ozarks; and Jake leads his hounds through a pulse-pounding training day.

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.

High in the Appalachians, Eustace Conway is forced to track down a poacher that has trespassed upon his land. In Alaska, Marty Meierotto is in on the hunt to provide for his family when unwanted grizzlies make themselves known. And in the Yaak Valley of Montana, bears wake as Tom and friend Tim hunt antlers deep into the forest. But when things get dangerously quiet, they soon realize they are not alone.

An early thaw puts Morgan's supply drop on thin ice; Marty hunts the beasts of Kodiak Island; Tom makes the most of his unprecedented winning streak.

Morgan walks into a death trap in the Alaska Range when a whiteout hits in an avalanche zone.

Marty's retreat leads to a surprise in his own backyard; Morgan builds to beat the dangers of the deep freeze; Tom hits the jackpot.

In Alaska, Marty tries to capitalize on his recent string of good luck by building a second cabin at the far end of his trap line. Andy flies in to help but with temperatures dropping below zero, the backbreaking labor takes a toll. Tom is still recovering from a knee injury, but he needs a beaver tail to finish his latest commission. Tim and Nancy volunteer to head to the river and check Tom's traps for him, but it proves to be more challenging than they expected. In the Ruby Valley... with his prized stud horse, Rusty, threatening to escape and join a wild herd, Rich works on fixing up his corral along with his friend, Brad. But things quickly start going south. In Idaho, George Michaud has a run in with a thieving predator and in North Carolina, Eustace, Preston and Scout continue to work on the damaged tool shed roof, giving Eustace a chance to test Scout's evolving skills.

The river deals Tom's season a fatal blow. Marty fights the ice to make it home and Jason battles a deadline to deliver for his family.

The end of Montana's long winter is finally in sight. Tom and Nancy Oar are scrambling to get through the last of their winter works when a surprise call comes in from their family that will force them to make a difficult decision. In the Ruby Valley, Rich passes on some of his lion hunting knowledge to a greenhorn. Eustace takes an opportunity to pay down his loan by building a primitive canoe, but the work is well outside his comfort zone. Charlie continues to struggle with his injury, while racing the change in seasons to secure some final furs, and after a highly successful season, Marty bear proofs his cabin and prepares to head home to Two Rivers.

Mike escapes the bear-ridden Kodiak interior on foot, as Jake runs a lion on foreign ground. Meanwhile, Josh battles a prairie dog colony.

As the worst winter in decades rages across the nation, the Mountain Men must fight to stay on top of the food chain. In the Yaak Valley, the growing wolf population comes knocking on Tom Oar's door, and quickly turns into a blood feud. In Alaska, Marty Meierotto's traps are coming up empty, causing him and his family to regroup and figure out how they're going to survive the season. In the Ruby Valley of southwest Montana, Rich Lewis bags enough meat to survive the winter, but his battle has only begun as hungry predators catch the scent. In North Carolina, Eustace Conway struggles to bring a 100-year-old sawmill back to life to keep his property in the black. And in New Mexico's Cimarron Valley, Kyle Bell puts his 10-year-old son's mountain man skills to the test on his first hunting trip.

Eustace and his neighbor train a stubborn stallion; Jake and his team of dogs successfully run off their first mountain lion of the season; Paul tracks and kills a young buck; Aron hunts for moose, while Jen fishes for rainbow trout.

Marty rushes to make the most of an extra pair of hands. Tom's grandson comes for a visit but soon learns that there's no such thing as vacation in the Yaak. Charlie heads out on a hunt for shed moose antlers. And in Montana's Ruby Valley, Rich Lewis' dogs are hot on the scent of a mountain lion when their hunt takes a dangerous turn.

Marty fights back against a wolverine but it takes him on a treacherous journey; Charlie takes a big risk in uncharted wilderness and Tom claims his place on the food chain.

Marty begins an epic overland journey into the Alaskan bush. Morgan clashes with a ravenous grizzly bear.