Todd runs two massive washplants, Tony pushes to get his dredge out of the water before it freezes and Grandpa John arrives to find out if Parker has beaten his rival Todd. Chasing a record-breaking goal, Parker orders an unachievable goal. And, there's a look back at the biggest payouts of gold, crab cash, and treasure. With the brutal Alaskan winter threatening, they battle floods, cave-ins and equipment breakdowns. John Schnabel returns to the Big Nugget Mine after his heart attack.
The Dakota boys face the threat of historic floods and Parker desperately needs to secure new ground. Later, Parker's flooded out; and Tony's ancient dredge scores record gold. Parker brings in dynamite to blast a big solid rock to finish building a new road to Smith Creek. Parker's crew goes into meltdown when he forces them to replace a bridge, while Fred attempts to make a precision part for the 270's track out of scrap metal. Tony struggles to get his dredge to Dawson before the Yukon River freezes. This special episode reveals what went wrong and how the guys plan to hit the mother lode next season.
Parker spends a quarter of a million dollars on new equipment. He hits his goal, even with a gold thief on the loose. Todd's new washplant hits the noise limits for local regulations and they must find a bush fix to solve the problem. Tony discovers his dredge is pouring gold out of its sluices. Tony seeks for a new investment. Todd tries to get Hunter back on the team to assemble a new wash-plant and Tony's stuck up the creek without a barge. Parker worries his season is over — but his grandpa is convinced he's near the mother lode.
At Indian River, Dave Turin is on the gold. Desperate for pay dirt, Parker bulldozes a dangerous road up the side of a mountain and Fred returns to Porcupine Creek after facing the loss of his North Dakota home. Todd searches for a fix so he can stop losing gold out of the sluicebox. 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. Elsewhere, Tony and Gene have a disagreement about operations while Parker's wash plant is washing pay, but his team falls apart. Parker's crew pushes hard in attempt to have Treasure Island live up to its name.
Elsewhere, Parker attempts a large haul. Frozen pay disrupts Parker's operation and threatens to end his season early. Parker races to get his second wash plant running, but struggles. The Dakota boys may be forced to abandon their hole. With features from Moonshiners, Gold Divers and Deadliest Catch.
Tony is forced to rebuild his washplant and Parker opens the biggest cut of his life in an attempt to get more gold than his rival Todd. The Hoffman crew moves their operation to the hostile Guyana jungle. Meanwhile, Fred Hurt brings in a new wheel-loader, and hires two new miners, but a shocking revelation one week in forces him to quickly fire one of them. Tony's crew battles over how to fix the bucket line on the dredge and Todd calls upon Freddy Dodge for help. Todd desperately tries to stop his crew from falling apart.
Tony's dredge takes a hit as he puts a rookie winchman in the hot seat. I like the show, but it used to be way better without all the fake drama and bullshit. Todd sets a massive goal for the season and Tony reveals big plans to expand his operation. Rain and thawing snow flood the mine and Jack puts his life on the line as the glory hole caves in around the massive 100,000-pound excavator. One-hour trailer for the Discovery Channel — low in content. In the end, two crews get their biggest gold clean-outs to date, while the third faces an abrupt end to their season.
But a visit from the Department of Fish and Game reveals a violation, jeopardizing their vital water supply to the mine. Jason is furious and threatens to pull the plug on their season. I sure am tired of them though. Parker hauls his washplant across the claim and Tony takes to the skies to get from his claim to the gold dredge. Loaded with supplies, they leave their loved ones behind and drive from Oregon to southeast Alaska in a Klondike convoy. The Dakota Boys believe they've finally found the elusive Glory Hole. In Alaska, the Dakota Boys take to the skies trying to find a way to the source of all the gold in Porcupine Creek.
Most never made it to the end. A look forward reveals where the miners will be next season and who will return. Tony Beets takes a convoy of military trucks on a treacherous journey to hunt down parts for his monster dredge. As the Dakota Boys set up their new wash plant, Fred pushes his son too hard and Dustin storms off. Todd discovers a major design flaw in the equipment and is forced to make huge modifications.