After ratter thieves raid their mine, Misfit Angel and rookie miner Cody Polglase struggle to find an opal king stone to fulfill a bespoke pendant order for an interstate buyer in time. Mark Bressan and Chris Cheal battle to fix their downed excavator as encroaching wet weather attracts ratters to their exposed mine. Oscar and Luca are forced aboveground to protect the Cheals' claim before the team is rewarded with a massive opal haul. Using revolutionary new mining techniques, Slim Pickings, Lee Hobden's and Roger Williams's new team, race to fulfill a last-minute opal order by hunting for stones in quicksand-like silt.