Ken fights a double mutiny when his plant and a crew-member go rogue. Cam’s veteran welder is struck down and airlifted to hospital. Karl’s crew encounters a bear.

The miners battle nature’s wrath in an epic final push for gold. Ken’s bid to pull 100 ounces out of hot ground goes sideways when the mine runs out of fuel, forcing him to shut down sluicing and fight his way up Moose Creek’s treacherous road in a desperate bid to get to a fuel station at the top. Karl’s race to mine Sulphur Creek out so he can stake his own claim is benched when one of his crew deals his prize sluice plant a near fatal blow. Big Al follows his gut to high-stakes ground only to be shut out when his only stripping dozer goes down for the count.

Karl hopes to score 100 ounces of gold in one week. Ken weighs the cost of an eager but careless hand who keeps breaking equipment. Big Al has to replace big iron without a big payday.

Crews are racing to rip through ground as winter descends. Ken and right-hand man Guillaume fight to keep the Beast sluicing through subzero temperatures only to discover the dirt they’ve banked on has run dry. Cam’s plans to mine an ancient waterfall go sideways when the treacherous ground threatens to bench his iron for good. Karl and right-hand man Kyle’s mechanical skills are put to the test when the season takes its toll on Sulphur Creek’s operation.

Ken loses a machine when he can’t afford to pay his debts and his crew. Big Al smells gold in the ground, but gets shut down by equipment breakdowns. Dennis has to scrape $10,000 out of hostile ground to replace a part or face permanent shutdown.

Ken’s wife visits to discover he’s on the verge of going broke. Big Al’s excavator takes a nosedive. Karl’s season is threatened by permafrost.

Dennis’ hunt for gold proves unsuccessful. Ken breaks a machine in his haste to sluice. Karl’s cut floods, putting his season in jeopardy.

Ken takes a roll in his bulldozer. Beavers threaten to shut down Big Al. Karl’s loader springs a leak.

The short Yukon gold mining season is almost over, and crews are battling the elements in a mad push for gold. Ken is forced to call in reinforcements when winter hits Moose Creek hard. Cam hits an impenetrable ice wall that freezes him out of his cut and moves to risky new ground only to have crucial iron go down. Big Al’s plans to rip through promising dirt are sidelined when his only stripping dozer suffers a catastrophic breakdown that puts right-hand man Hiro’s mechanical skills to the ultimate test.

Ken sinks big money to dig out a narrow cut. New miner Cam’s big payday is threatened by fire. Karl’s experienced but unreliable operator forces his hand.