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; Vernon leans on a diver making her comeback.
Each season of the show follows a different group of dredgers, those who search for gold in shallow waters, at the bottom of the sea or even ocean. They often collect paydirt, ground from the seabed that contains some precious ore.