To get Australia Creek's gold, Parker cannibalizes multiple machines to build a "Frankendozer." The Beets battle a flash flood on the Indian River. Running out of options, Rick heads to higher ground to hunt for gold but is stopped dead in his tracks.

Parker gains momentum at Dominion Creek, but a mysterious gold loss could set him back. Tony moves everyone back to Paradise Hill, and tensions boil over. Rick bets on a mechanic who's never been in a gold mine.