The race for untapped gold in bottomless depths kicks off as Chris and newcomer Joe go to war over a contested spot. Vern deploys an untested crew and new Nitrox air system for their deepest dives yet. Mr. Gold attempts to access riches via inland gold.

After a week lost to stormy weather, the fleet scrambles to make up for lost time in innovative ways. Shawn employs a risky hydraulic blaster, Chris gambles on a rookie diver, and Joe pushes himself and his dive crew to dangerous levels with a big payoff.