Winter mining has begun and Shawn opens his claim to the fleet for a cut of their gold while he's off planning a bigger future for the Pomrenke family's dredging operation. Meanwhile, Zeke and Emily join forces and make the risky decision to camp on the ice for the entire season.
Shawn intervenes when the Kellys encroach on Vern's mining spot and refuse to relocate. Meanwhile, Emily takes matters into her own hands after Zeke's new sluice causes them to lose all the gold they've collected.
Flu sweeps through the fleet leaving the divers unable to dredge for gold while Vern is forced to rely on his only healthy diver a greenhorn female with no experience. On Steve's inland operation, a piece of crucial equipment is in danger of being lost forever which could cost them their whole season.
Emily and Zeke clash over his belief that two divers are better than one while Vernon rehires a former employee whose reputation as a troublemaker precedes him. Meanwhile, the Kellys' bad luck continues just as they finally get on the gold.
Zeke endangers his brother's life when he implements another risky plan and Vern's new hire on the Wild Ranger clashes with the crew leading to a huge blowup. On the high Noon, Derek tangles with a malfunctioning piece of equipment that could burn his diver alive.
The mining season is ending and the crews race to find gold and secure a profit before the government shuts them down. Kris Kelly brings his mom to Nome and dad Brad is not happy about the decision while Emily gathers the courage to confront her biggest fear to help the Clark succeed. Meanwhile, Shawn contemplates making a massive purchase that could make or break his whole operation.
The crews suffer dangerous mishaps and frightening health scares as the season comes to an end. On the High Noon, Derek saves the life of a down diver and questions whether or not to end the season early while Vern is rushed to the hospital after nearly fainting on the ice. Meanwhile, Zeke loses his cool when a piece of equipment malfunctions with only hours left to mine before the deadline.