As the Hoffman crew completes a marathon of government fixes in record time, Todd promises a gold bonus to everyone who completes the season. When Todd hires new miners to get the plant into operation, one greenhorn struggles with the rigors of the job.

When the motor in Todd's Black Pearl trommel catches fire, the Hoffman crew attempts to modify the smaller wash plant Jack built decades ago to run more pay dirt. But after Todd orders round-the-clock mining to hit their goal, failures begin to mount.

Ice sets in early, threatening to freeze the operation. In a desperate search for unfrozen ground, Andy creates a novel solution: digging up the road they built at the start of the season to harvest the gold-rich Lost Cut pay dirt it was built from.

In the season finale, Todd's crew races to beat 1,000 ounces and make a profitable final season for Grampa Jack. But with a season-ending snowfall in the forecast, the rich pay dirt they need may be in the last place an old-school miner would ever look.

As melting permafrost makes mud out of pay dirt, Andy devises an engineering longshot to prove the Lost Cut is rich with gold.

When the government orders a long list of fixes, Todd's crew questions if they can work with little hope of a gold bonus. Frustrations reach a breaking point between Chambo and Andy. For Todd, it comes down to a single gold weigh to keep his crew intact.

Todd gets Holy Roller running and catching nuggets. Looking to make his mark, Hunter transports the largest wash plant the Hoffmans have ever used to the site. Unloading the mammoth wash plant leads to a mammoth fight between father and son.

When state inspectors make a surprise visit to the mine, Todd braces for citations and fines. But when it appears the government could shut them down completely, the Hoffman team races to save their operation before the inspectors return with a verdict.

The Hoffmans are succeeding on an Alaskan mine site that ruined generations of miners before them.

A shift in the weather turns Andy's routine mining decision into a potential disaster when melting ice threatens to contaminate the nearby creek with silt.

As pay dirt from the Lost Cut Mine runs low, Hunter runs dirt from a promising new location called the Plateau. Framer disappears after heading out on a solo caribou hunt, forcing Todd to turn to the Alaska Troopers for help with the search and rescue.

Three generations of the Hoffman family risk the harsh Alaskan tundra, hoping to mine $5 million in gold.

Hunter treks into the tundra to prospect for new paydirt before the Lost Cut runs dry.

As Todd's Holy Roller plant runs non-stop, Hunter's Black Pearl plant is finally ready to wash dirt. But the mine is shut down when Hunter's plant blocks access to rocks from Todd's tailings. An epic father-and-son showdown puts the season in jeopardy.

Todd must deliver 300 ounces of gold in just seven weeks. To make it happen, his first step is getting Hot Mess, a massive broken-down wash plant, up and running. Todd goes rogue and opens a new cut behind the mine owner's back.

Smoke from a nearby fire has the Hoffmans on edge and praying for rain. Their prayers are answered, but the torrential storms may flood the mine, leaving the team scrambling to save their paydirt. Hunter pushes to get his wash plant up and running.

Hunter fires up the Black Pearl and runs dirt for the first time this season but then is quickly fixing leaks and pump problems. Falling behind on his 1,000-ounce goal, Todd is desperate to find better paydirt and chases an old-time miner's drift.

Desperate to run more paydirt, Todd fires up Big Trommel but the plant is so worn-out, Todd's nicknamed it Hot Mess. The team chases fix after fix to keep the plant running and chase their million-dollar goal.

When Alaskan temperatures plunge, Todd and the team are caught by surprise. Their biggest wash plant is frozen and the Hoffman's rush to thaw out their other plants before they're iced out for the season.

Determined to mine a daunting 1,000 ounces of gold this year, Todd Hoffman brings a hand-picked wash plant and all-star crew to his remote Alaskan claim. When they struggle out of the gate, his son Hunter has a bold fix -- he wants to run his own plant.

It's Jack Hoffman's birthday, but no time for cake. He must fix 'Hot Mess' that leaks more gold than it catches. Freddy and Juan hope to save a Colorado father and son's gold recovery and relationship before heading to Alaska to help three remote miners.

To hit his million-dollar goal, Todd pushes his team to get a third wash plant delivering gold. As the mine ramps up, the road system needs to be overhauled so they can keep paydirt moving before the deep freeze.

The Hoffmans discover a huge vein of gold that could save their season if they can get it out of the ground in time.

With their million-dollar goal in sight, the Hoffmans' best working wash plant breaks down and can't be repaired. Todd's last shot is to get the Hot Mess up and running during an arctic freeze.

Hunter takes on the arctic tundra when a geologist's lead points to crazy gold on the edge of the Hoffman claim. Back at camp, Andy works to turn paydirt from an ancient river channel into a big payoff.