The season is halfway through as Ken and Guillaume try to reverse their bad luck by moving, Bernie has to deal with mistakes made by his junior crew, and Karl's night crew starts to slow him down.

Winter threatens to shut down mining early, Guillaume considers retiring the frozen Bad Attitude for good, Karl's sluice box ices over and traps his gold, and Big Al and Hiro battle beavers.

Snow on Moose Creek makes for dangerous conditions and critical mistakes, Karl faces simultaneous breakdowns causing a shutdown, and Bernie's pay streak suddenly ends just as he loses a crew member.

Big Al moves his sluice plant to his last pit of pay dirt, Ken and Guillaume may have hit their mother lode, and Bernie's gear degrades and potentially ends his season prematurely.

Ken makes a dangerous fuel run with no diesel left, Karl ignores his dad's advice and risks a flood on their mine, and Big Al's final efforts may push his crew to their breaking point.

In the Arctic, the search for water, firewood, and other vital resources is a never-ending quest. It requires Alaskans to explore remote locations unfit for normal human existence.

An unusually low snowfall and a late freeze-up in the Arctic presents new challenges to the Alaskans. Travel on the treacherous trails through the wilderness becomes more of a risk.

Inside Washoe County Jail, a surge of arrests strains operations. The sheriff enforces strict control as deputies work to separate gangs. In the female unit, a pregnant inmate prepares to give birth.

As 'Dirt Dogs' Vern and Leon are forced to uproot their operation, 'Gold Gypsies' Chris and Greg face a huge decision and remote prospectors Henri and Kellie strike salt-lake gold.

Torrential rain threatens to drown out the season for the Dirt Dogs. Remote prospectors Henri and Kellie hit a hot streak while the Gold Gypsies strike a once-in-a-lifetime find.

The Dirt Dogs' comeback rests on a crucial make-or-break action. Chris and Greg surf a wave of reef gold, and Henri and Kellie risk life and limb to continue working a rich vein.