The Rookies face disaster from the get-go when Justin kicks off the new mining season alone with Dan stuck at home; the Opal Queen brings in new muscle and new machines for an underground opal hunt; Col's Crew's quest is derailed by an illness.

Justin runs into trouble when his excavator has an expensive oil leak; the Fire Crew goes on a wild goose chase.

There's tension among the rookies as a new partner leads them on a wild goose chase; the Cooke brothers' season is off to a bad and dangerous start.

The Rookies battle their biggest claim yet; Col's Crew must bring out the old machines to hunt a new opal seam; things heat up as the Fire Crew races a fuel leak while chasing legendary red fire opal.

The Rookies give their partnership one last chance; Col's crew is on a crash course as his illness slows them down; the Cooke brothers fight busted hoses and breakdowns.

Justin brings on fiancée Becky to help save his finances; the Fire Crew encounter some dangerous reptiles; the Cooke brothers travel 21m below the surface.