As the miners look to find more valuable ground, Shawn must fight the sea's shifting tide, Ken strains his excavator arm when digging hard cobble, Kris tries his chances with a rookie diver and new diver Brian saves Vernon's day.
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.