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The three build teams have problems with broken generators and a missing crew member. Meanwhile, Dave decides to go solo despite the risks of working alone.

Near the midpoint of the shortened mining season, every dredge must hustle to stay on the gold. But in their haste, small miscalculations lead to massive problems.

Rick's start to the season only gets worse when he finds his truck's been ransacked. Plus, the Dirt Dogs ambush a gold thief and their chances of a profit takes a hit.

Mike tries to find a rust-free classic Stag, but it's harder than he thinks. Ed will have to keep costs super low for any chance of a profit on this one.

The boys are challenged to find a Lotus Elan that hasn't been snapped up by restorers. Once they've tracked one down, Mike falls in love after minutes behind the wheel.

A proud son wants to surprise his dad with a 1960 Chevy pickup truck for his 65th birthday. And, Wayne buys a single-owner '67 Lamborghini 400 GT.

Jacob and Ana White are building a remote home in Paxson Lake, Alaska. After planning for over a year, they're finally ready to complete the difficult build.

In the area of Colorado known for its unpredictability and wild animals, daring mountain bikers build their own self-sufficient retreat, featuring a bike park.

While Tyler and Ashley trek 15 miles to a lake cabin in search for food. Bob leaves home to see his daughter and assess the damage of his crashed plane.

The darkness has arrived and Heimo gets caught miles from home in the wilderness. Plus, the Lewis Family prepares for a life changing event.

The Raneys continue their work on the tire bale homestead in Central Ohio. They provide fresh water, strengthen walls and jumpstart an indoor garden.

The Raneys help a couple with a toxic salt water well, making it impossible to maintain a food source. Matt builds a solar still to de-contaminate the water.

Brother. Brothers Peter and Mick Cooke face off in a scrapheap challenge to build a opal hunting machine. And, the rookies resort to night time hunting.

Desperate to move more rock, the rookies get a lesson in the dangerous art of bomb-making. Plus, Kelly is forced to sell her precious reserve of stones.

As the Opilio crab season opens, several greenhorns are about to experience the subfreezing temperatures and icy winter waters of the Bering Sea for the first time.

Only days into the Opilio season, a major storm breaks and high seas cause Captain Andy of the Time Bandit to call his men off deck, moments before a wave hits.

A young couple face a mire of muddy clay in the Georgia woods. The Raneys must help with unsanitary conditions and crumbling infrastructure.

Jacqui and Andrew are stranded in the dangerous tropical wilderness of the Palmer River region. Meanwhile, the Poseidon Crew face a critical meeting.

A Bigfoot believer who is afraid of the dark, and a tough mom who has never left home, take on the dark and mysterious Mayan jungles of Belize.

A mountain Mum, filled with a wealth of wilderness knowledge, attempts to survive with a partner who seems to prefer napping to trapping.

The build teams persevere through pounding rain and impending snowfall in remote Alaskan settings.

All the teams are working hard to make the season pay. But they will have to contend with the weight of the past before they can land on future riches.

The Gold Gypsies get to work to reach their ambitious target. Plus, desperate to get back on track, Rick takes a gamble and heads to an old mining town. But will it pay off.

Who said three-wheeled cars can't be desirable? Mike goes on the hunt for a truly iconic car - the 1970s Bond Bug. It's orange, has no doors and only three wheels.

Mike tries to find a V8-powered Land Rover Defender that Edd can turn into a cool urban cruiser. With just £5,000 can he find a decent car and spec it up.

Wayne finds a 100-year-old Harley Davidson in a basement and gambles on a pair of Ducatis at a Las Vegas auction. Plus, he meets top bike-builder, Arlen Ness.

Matteo Lundgren takes natural building to a new level. His custom-designed Cob houses, made solely from the earth's ingredients, blend with their surrounding environment.

Alaskan adventurer, Don Lee, is building a survival cabin on top of a glacier. The area is only accessible by air and he battles the elements to complete the build.

As the end of winter nears, the residents look toward to the future. Bob trains Ruger to be a hunting dog, while Ray prepares for a life without his daughters.

Sunlight finally returns to the refuge. Heimo is stopped in his tracks by -50 degree temperatures, and The Seldens make their home in a new cabin.

The Raneys answer an SOS from a family displaced by their failing homestead. Matt teaches an ill mother how to face her fear of invasive hogs.

The Raneys tackle a treehouse cabin on the verge of collapse in Missouri. Marty overhauls the entire base of the cabin, while Misty constructs a greenhouse.

With the end of the season approaching, the rookies risk cave-ins at their abandoned mine claim. Deep underground, George is trapped in the blast zone.

The mining season is almost over and Col's crew take one last gamble. The Cooke brothers strive to save their mega opal machine and disastrous season.

Broken pots and a blown engine put the Northwestern a week behind schedule. Captain Sig hopes his luck will change as he drops his gear north of the fleet.

As the harsh winter weather deteriorates, the Northwestern and Cornelia Marie step up to prove their worth, working through broken bones and icy decks.

When a woman starts growing uncontrollably, she is forced to face a shocking reality, and a man who thought he had asthma is confused by a new symptom.

A man tries to ease his wife's sinus pains, while a woman faces her own mortality when she experiences a series of debilitating symptoms.

Winter storms ravage the Gold Retrievers' new $35,000 dry blower and could end their season. Meanwhile, the pressure to find gold could tear the Ferals apart.

A hunter from Louisiana meets a California surfer girl on a deserted island of the Philippines. With very little water to tap into, dehydration soon sets in.

A book-smart but inexperienced survivalist and a rock-climbing wilderness enthusiast take on the savannah of Namibia - but the harsh conditions quickly take a toll.

The three teams continue their builds in unique Alaskan locations. They must deal with poorly cut glulam beams and cancelled orders.

With less than a week remaining in the season, every crew is battling the clock. Just when they think it couldn't get any harder, a massive storm descends on Nome.

The Scrappers are robbed, threatening their chances of turning a profit. Meanwhile, the Millzilla unexpectedly breaks down, costing the Dirt Dogs $1,000 a day.

The team can't wait to get hold of a Volvo P1800 but the problem is, these cars are rare and Mike can only find a single car that's in budget. Will it be good enough.

Mike finds a clean WRX at a good price. Mike decides to make it stand out by making it go faster and look better. Edd has plenty of ideas on how to do both.

Wayne pursues a '61 Cadillac Coupe DeVille. Plus, he sells a '71 Corvette Stingray and '70 C10 Chevy pickup at the Barrett-Jackson Northeast Auction.

Summer and Jack moved from their hometown in New Jersey to build their dream mud home in a remote, woody area in Washington, in the Pacific Northwest.

Molly and pro-snowboarder Sean live in a yurt in Montana, but now they're building a tiny house in 12 weeks. They have $20,000 to complete the tricky project.

As the summer fades, the last Alaskans begin their countdown to trapping season. Heimo works to ready a campsite, while Tyler and Ashley hope to stock up on moose meat.

The countdown to winter continues as Heimo breaks ground on the new cabin, while Bob and his daughter embark on a river journey to the cabin where she was raised.

The Raneys give a masterclass on rebuilding from scratch when they come to the aid of a family whose homestead was completely destroyed in a devastating wildfire.

The Jackson family suffer from a cabin on the verge of collapse and predators threatening their 100 chickens. The Raneys use all new ingenuity to make the cabin liveable.

With Dan stuck at home, Justin starts the new mining season alone. He is dealt a huge blow when their rich underground mine has been pegged by another miner.

Justin's excavator has an expensive oil leak. Plus, Col's crew are a man down and the Fire Crew are on a wild goose chase hunting a bounty of fabled fire opal.

The Time Bandit enjoys unseasonable weather and unprecedented catches. But when the weather drastically changes the boat is caught in a crippling ice pack.

It's the final showdown for the greenhorns - some have succeeded in their quest to become Bering Sea crab fisherman, but others won't be coming back.

Brad DeBerti and his dad, Doug, build a tool truck that still has all its cool features. Plus, does Brad have what it takes to race on a dirt track rally team.

Brad DeBerti and his dad, Doug, plan to reveal a new truck at the world's biggest auto show. But, they are under serious time pressure - can they finish it.