After the raging storm, Ken learns the Myrtle Irene's fate. Shawn uses a new tool to hunt for new hotspots. Emily brings on a new crew member from her past. Vernon tries his luck at river mining. Kris gambles on an alliance to turn his season around.
In the frontier town of Nome, Alaska, there's a gold rush on. But you've never seen gold mining like this before - here, the precious metal isn't found in the ground. It's sitting in the most unlikely of places: the bottom of the frigid, unpredictable Bering Sea. And there are a handful of people willing to risk it all to bring it to the surface.