In the epic 2-hr premiere Todd Hoffman takes the biggest gamble and turns his back on guaranteed gold in the Klondike. Tony Beets expands his empire, buying a huge second dredge. Parker Schnabel starts his new season without his grandfather & mentor.

Todd Hoffman's new Oregon mine fails to deliver; Parker Schnabel's new $600,000 wash plant breaks down on its first start; Tony Beets takes to the sky to check up on his children.

Todd returns to the Klondike to collect Monster Red while Parker confronts tough negotiator Tony over royalties and receives a shock offer.

Todd finally finds good gold at his new High Bar mine; Parker gives his foreman Rick his own operation and when Tony and Minnie decide to cut the dredge crew's pay, a key crew member calls it quits.

Todd battles to get the fifty ounces of gold he needs to keep his High Bar mine open; Tony brings all his children together to get his Paradise Hill claim up and running; Parker is furious at a series of errors which cost him thousands of dollars.

Todd moves his entire operation and begins to run pay dirt at a new mine. Later, Parker's flooded out; and Tony's ancient dredge scores record gold.

Tony arrives to find his million-dollar dredge in disaster. While Rick is at his grandpa's funeral, Parker shuts him down by taking his equipment, and the Hoffmans discover that their wash-plant doesn't work in their new mine.

Todd digs deeper than ever before in a desperate quest for gold; Tony heads down the Yukon River; and Parker's pricey wash-plant begins to shake apart.

Tony breaks records with the biggest gold haul in series history; Parker struggles to save his wash-plant; and Todd finally strikes gold after seven weeks at the Buckland.

Todd Hoffman hits rock bottom when a key crew member quits; Tony Beets transforms some rusty relics into a monster power barge; a troubled Parker Schnabel misses his own birthday party.

With no paycheck for five weeks, Todd Hoffman's close-knit team turn on each other. Parker's gamble to run his washplant without protection from rocks proves costly. Tony builds a $10,000 mega-trailer to move his barge – but gets his measurements wrong.

Todd struggles to continue mining after his crew quits; Parker recklessly damages his truck's air hoses while transporting the wash plant; and Tony discovers his dredge is blowing gold out of the sluices.

The remnants of the Hoffman crew reach their lowest point, but someone brings Todd good news; Tony Beets fires his barge captain, then runs aground up the mighty Yukon River; Rick Ness finally gets Parker Schnabel's second operation up and running.

Rick outperforms Parker on his new Indian River claim; Tony's dredge suffers a catastrophic failure, threatening his season; Todd Hoffman's skeleton crew finally sees good gold at their new mine in Colorado.

Todd Hoffman eats humble pie when he begs his old crew to return, Parker Schnabel loses an excavator in a swamp and Tony Beets gives his daughter Monica her own operation.

The Hoffman crew opens a second mine in Colorado; Parker Schnabel tries out a new mechanic who fails to get approval from Mitch; Tony Beets sets sail in a power-barge up the mighty Yukon river.

Circumstances force Parker Schnabel to call his dad in to help his struggling operation; Todd Hoffman has the best clean-up of the season; Tony Beets' daughter Monica starts bringing home the gold.

Todd's whole operation is brought to a halt when a beaver dams his water supply, Parker’s plant move turns into an excavator nightmare and a massive fix means Tony can finally get his broken dredge up and running.

Todd finds monster nuggets on the top of a mountain, Parker and Rick struggle with a conveyor and Tony pits Monica against Kevin to see if the dredge is more efficient than a modern washplant.

Todd uses dynamite to blast monster boulders and get to the gold, Parker has to overcome a flood to get to a record gold count and Tony heads up the freezing Yukon River in his massive power barge.

As each crew attempts to hit their final goals, a fist fight on the Hoffman claim ends in a resignation; Tony's plan to relocate his dredge hits a brick wall; and Parker records the biggest gold weigh of his life and teases his next big adventure.