Back where their gold-mining adventures began, 'Gold Rush' alumni "Dakota" Fred and son Dustin risk their lives for a fortune they may never realize. Assisted by a team of intrepid divers, mountaineers, and bush mechanics, the Dakota Boys explore the wilderness of Haines Borough, Alaska, diving deep in raging whitewater creeks with a suction dredge. One wrong move could prove deadly as they face wild animals, extreme temperatures, and hypothermia.