Only days into the winter mining season, a regulator freeze up cuts off Shawn's air supply. Emily negotiates with Mr. Gold for season-saving coordinates. Vernon returns to the ice with an eye to buy Claim 16. The Kellys get on some gold.
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.