The broke Bushmen are forced to trade opal to get a shaft drilled on a new claim and lose thousands of dollars on the deal. Facing legendary opal buyer "Herman the German" they risk being on the bad end of a trade for a second time. The Mooka Boys attempt to revive a long-neglected dump truck and their opal processing plant with disastrous results. Out of options they're forced to blacklight piles of dirt in the dead of night. The Digi Diggers home-made hoist and bucket breaks apart and the team get lost exploring a terrifying abandoned mine to scavenge for spare parts. High end jewelers arrive in Yowah and hard ball the Digi Diggers on their biggest attempted sale.