The first storm of summer arrives to rock the fleet; rivals Chris and Joe battle over big gold; Vern's diver faces a deep-water emergency; Kris orders the Mistress to put her crew on notice; Shawn makes a promising discovery.

The fleet goes for broke as Kris launches his crawler deeper than anyone has ever mined. Shawn must haul massive, season-saving equipment through a rising river, and Chris makes a historic discovery: the biggest gold nugget ever found offshore from Nome!

As the end of the mining season looms, the fleet has its richest week to date; Shawn unleashes a full force of equipment inland, Joe's marathon dives hit the jackpot and Chris fights against currents to reach his payday.

The weather is turning, and it's become "make or break" time for many miners in the fleet; Vern finds a lucky nugget, while Shawn battles freezing ground; Joe loses his ace diver; facing mutiny, Zeke pulls up his stakes to find a new claim.

Tensions rise as the mining season hits its midpoint; the Kellys launch the All-In and Zeke hits the cheese; Shawn struggles to find a pay streak and an alleged claim jumper sets up on the Tomcod Claim hotspot.

Tensions explode on the Tomcod Claim; Chris takes radical action against a dredge he believes is jumping his claim; when a massive explosion blows a hole in the Mistress, Kris scrambles to save his livelihood.

Newcomer Ken Kerr and the 600 ton beast Myrtle Irene threaten Shawn's plan to build his megadredge. The elements jeopardize Emily's plan to dive deeper. Kris heads to The Bluff with a new dredge, but faces complications

Shawn tries to convince potential investors that his Megadredge vision is solid; Kris' frustration frays Andy's nerves; Zeke unleashes a secret weapon, but faces an unexpected challenge; Emily tries to pull her crew together to avoid an end.

Shawn gambles on a risky move. Kris suffers a life-threatening air line freeze up and makes a decision about his brother. Zeke attempts the most dangerous dive of his life through twenty feet of ice.

Shawn searches for a paystreak boulder to fund the Megadredge, but when it's flipped his season may be, too. Kris' dream of a 24-hour operation starts with a night crew, but he may wake to a nightmare.

The Bering Sea battle heats up as Shawn bets big on a new discovery he hopes will keep him ahead of Ken's massive dredge. The Kellys are forced to find new ground. Emily nearly boils a diver alive.

Shawn races to prove the viability of the TOMCOD; Kris makes amends with his crew; Brad dives for the first time in five years; Emily tries to break her ice season curse.

In the Bluff's lawless waters, Shawn and Kris wield brute strength and make verbal threats while standing their ground against the competition; in Nome, Alaska, Emily and George gamble on new strategies and resources.

Winter winds force the captains to reevaluate risk and reward. Shawn's mega-barge extraction takes a turn for the worse. Ken pushes the Myrtle to the limit on a 5-day run. Emily sends her divers deeper. Kris invents a new form of prospecting.

On this ice season Judgement Day, Shawn pushes himself and his equipment to the edge. Kris and the Kellys rise from the ashes of an engine shack fire. Vernon pitches his operation to a big time investor.

Kris and crew face one mishap after another in Elim. Shawn pursues complete control over the inland mine. Vernon pits his divers against each other in a gold-getting competition. Steve and Emily prospect on the beach.

The Kellys face gunfire from angry locals in Elim. Shawn injures himself on the Myrtle. Emily loses her rock-solid diver. Vernon finds a secret golden spot. The Black Swan finally gets on gold.

As a storm closes in on Nome, tensions rise in the fleet. While the dredgers battle rough seas to get the gold, the Pomrenkes disagree about Steve's dream to go mining inland.

Shawn Pomrenke prepares to head to the Bluff; Steve Pomrenke completes the first cleanup of the inland mining operation.

With three days left in the season, miners push themselves to the brink. Sleep, safety, and sanity are out the window in order to dredge maximum gold.

The Pomrenkes battle land and sea to vie for new gold rich mining ground. Desperate, Zeke and Emily risk both their life and careers in a dangerous boating maneuver. Kris has one last chance to prove himself as a captain and his mining skills if he wants to stay in Nome.

Shawn must fix his landlocked barge, but faulty controls threaten the Megadredge dream. Brad threatens to split the family before Kris can rally back to the Bluff. With only a week's worth of dredging supplies, Emily rolls the dice, hoping for fast payoff

Shawn and Kris battle encroaching miners; Ken's beastly Myrtle Irene continues to invade and operating costs soar; Emily expands her operation, but an air malfunction threatens her season.

With new claims up for grabs, old faces return to Nome's wild west as Mr. Gold launches his biggest season. Kris' Elim plan hits a hiccup. Vernon hustles to assemble his dream team. Emily searches for her own claim. Zeke attempts an ambitious creation.

Shawn must get the remastered Myrtle Irene onto the water. Zeke bets on himself by helping on Vernon's claim. Emily hopes to add to her all-star squad. Kris and his sceptic crew finally head to Elim.