As winter closes in on the mine, paydirt dwindles and the Black Pearl is down, Todd's 1,000-ounce goal looks out of reach. The Hoffmans gamble by running the Holy Roller day and night. Hunter races to find a new clutch for the Black Pearl.

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

As Alaska’s brutal winter bites, Todd works the night shift hoping to hit his million dollar goal. Will the final gold weigh be a big win - or another disaster.

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.

With temperatures plunging and pay dirt freezing, the Hoffmans scramble to make their season goal -- but machines across the mine shut down when water is detected in the fuel supply. The team races to drain and refuel engines across the site.

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

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

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

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.

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.

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.

A transmission issue threatens to shut down Todd's Holy Roller, but Randy and Tater come up with a bush fix to get gold moving. Chasing better paydirt, Hunter takes a big swing with a new cut. The Hoffmans push through for the season's best weigh-in.

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.

With both plants running, the competition between Todd and Hunter is on. Pushing to get ahead, Hunter works into the night, but a damaged waterline shuts down the Black Pearl. Todd is looking to pull ahead, but hose problems force him to make a quick fix.

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.

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.

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.

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.

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.

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