Winter is here and Shawn is back to the Bluff in search of the gold honey hole he found during summer mining season. Meanwhile, Zeke heads to Hastings Creek with his brother Sam now that Emily is out of the partnership.
The Kellys follow Shawn's lead and head to the Bluff to check out rumors of a modern day gold rush but the Pomrenkes are not happy with their new neighbors. Meanwhile, Emily is out on her own again after Zeke ended their partnership and she's determined to clean up at Hastings Creek.
Kris Kelly loses oxygen while diving far from the surface and Zeke faces his most frightening dive as he maneuvers through a 25 foot tunnel of ice. On the Bluff, Shawn relocates his operation which he hopes will bring him one step closer to completing the mega-dredge project.
Shawn continues his search to find the exact spot that brought him success last summer while the Kellys add a third shift fulfilling Kris's dream of mining 24 hours a day. Later, Emily heads to the Bluff to ask Shawn an important question that could make or break the rest of her season.
Shawn hatches a diabolical plan to shut down the Kelly's mining operation but the family isn't giving up so easily. Meanwhile, Zeke's bleak season suffers another setback when the ice around him starts to break up and he fears being swept out to sea.
The Kelly family splinters apart after Shawn shuts them down on the Bluff while Emily hopes to turn around her season by making a big move. In the town of St. Mary's, Alaska, Shawn and Steve make plans to relocate the massive barge they hope to transform into a mega-dredge.
Shawn outlines his idea to build a mega-dredge in front of potential investors while Kris Kelly reassesses his season goal of becoming a millionaire. Zeke heads to the Bluff with a new submersible dredge that he hopes will capture his first real gold of the season.
With one day left to mine the crews rush to finish the season on the gold and in the black. Shawn searches for enough of a payday to avoid relying on outside investors for his mega-dredge dream while the Kelly family scores a rare lucky break in their final hours of mining. Further down the Bluff, Zeke takes some dangerous risks in a desperate bid to end the summer with a little cash in his pocket.