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.

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.

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.

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.

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.

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.

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.

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 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.

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.

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.

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.

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.

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.

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.

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.

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.

No description available

Morgan's surprise discovery could finally put food on the table. Tom's hard work doesn't pay off.

Rich hunts a known dog-killer on unfamiliar ground. Morgan goes to great heights to protect his food supply. Tom harnesses the power of a bird of prey.

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.

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

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.

Eustace and Raleigh battle a polar vortex to get their lumber business back online; Mike braves a bear-infested landscape in search of fresh meat; Morgan and Margaret chase the migrating caribou, hoping to secure enough food for winter.

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.