Shawn gets his first taste of the shifting seabed. Ken tries a new perspective to find new ground. Kris and Emily each try out greenhorn divers to boost their productivity, but the plan grinds to a halt for one of them.
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.