Ken computerizes the Myrtle Irene. Kris considers an amazing opportunity to truly become a Bering Explorer. Vernon upgrades the Wild Ranger's pontoons. Emily considers doubling her capital investments. Shawn encounters legal issues with Pomrenke Mining.
Summer temperatures at an all time high disrupt the sea floor, causing miners to find new strategies. Shawn fights a legal battle. Ken tries to keep his gold crown, while Emily and the Kellys look to expand their operations.
As summer kicks into gear, Ken and the Myrtle Irene get stuck in the mud. The Kellys are forced to bail out at Fort Davis. Elaine tries to make up for lost time due to Vernon's late start. And Shawn receives word on the fate of the Christine Rose.
With a huge storm set to hit Nome, Shawn and Ken push their operations to the brink to get one last score in. And, one dredge pushes too far into the storm.
After the storm, Ken learns the Myrtle Irene's fate. Shawn uses a new tool to hunt for new hotspots. Kris gambles on an alliance to improve his season.
Winter has come -- along with the thinnest, most unpredictable ice in decades. After three years, Shawn returns to diving under the ice in pursuit of the Tomcod claim. Kris tries to set up and mine in one day. Emily's dependable Claim 14 shocks her.
The clock ticks as an impending, violent arctic storm the Siberian Express gathers strength. Shawn can't quit the gold. Kris gambles on another rookie miner. Emily finds gold but her equipment fails. Vernon risks everything to test Claim 16.
Following the arctic storm that drove everyone to shore, Shawn embarks on a marathon dive, Kris unveils a diving relay with The Reaper's new diver Shaunna and Emily takes another desperate shot at TOMCOD gold.
Suffering the icy burn of possible defeat, Kris wrecks his 3-diver relay plan and abandons his crew. Shawn is forced to question TOMCOD. Emily returns home to Claim 14. Vernon gambles on the edge of the ice.
The clock ticks as Shawn races to prove the viability of the TOMCOD. Kris makes amends with his crew and Brad dives for the first time in five years, saving the day with a surprise. Back on Claim 14, Emily tries to break her ice season curse.
When the temperature plummets to a season low, Shawn fights frozen ground with steam heat. Kris' hot plan to beat the cold fizzles quickly. Vernon gambles on a new spot.
As an arctic blizzard wreaks havoc across Nome, Kris finds gold under the ice but fire erupts overhead. Shawn struggles to rescue his operation. Emily risks it all on a double dive and Vernon leans on a diver making her comeback.