When a fellow miner vanishes, Ken and Shawn interrupt their operations to join the search and rescue. Vern finally unleashes on the Bering Sea.

Vernon and his crew get stranded in the Yukon. Shawn finds a good luck charm in his son. Ken suffers a mechanical setback and Emily sends rookie diver Chase underwater.

Whipping winds and crashing waves force the miners to ask themselves how hard they're willing to fight. Shawn channels his inner MacGyver to fix a stalled machine. Kris acts boldly. Vern must make a life or death decision.

Before the winter freeze out, Shawn gambles to dig deeper than ever before as Ken brings the heat. The Kellys restart from scratch with a new dredge design. Emily aims to work nonstop.

To test mother nature's stamina, Shawn pushes the Christine Rose to its maximum work depth in the face of massive swells while Ken digs on an untouched, gold-rich dirt patch. Emily faces ripping currents and an exhausted diver. Vernon hits the open seas.

Shawn and Ken are neck and neck to win their $130K wager as the frigid end approaches with some dangerous winds that threaten Shawn's wash-plant installation. Emily races Mother Nature. Vern risks the Goldship while on the hunt for pay dirt.

Despite the worst conditions in a decade, the miners hedge their bets as Shawn and Ken go head to head with their largest ships ever. Emily confronts the elements while Kris leads his family with a newfound determination.

Shawn's rival Ken unleashes his 600-ton gold gobbler while Shawn fights to keep a family dynasty. Vernon makes a valiant return in an attempt to strike it rich with a new dredge. Emily fights to reclaims her hotspot.

An epic Clash of Titans grips the gold mining fleet as Shawn constructs the largest washplant in Nome and Ken's mining monster roars to life. Vern prospects using his new innovations. Ripping currents threaten the Kellys.

With Nome in the crosshairs of a winter storm that will shut down the harbor, Shawn and Ken battle to win their bet, but only one will be crowned The Gold King.