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.
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.