Extreme summer heat pushes the Blacklighters to do a dangerous night-time dig. As monsoonal storms threaten the Boulder Boys' season, the Young Guns lose thousand of dollars worth of opal.

It is the final week of the season and one team makes a huge discovery, that has the potential to make their season. The Bushmen hire a rookie miner, whilst the Opal Whisperers chase big money.

The Australian Outback's wildest treasure hunters face even bigger challenges in their quest to strike it rich, as they seek the legendary Queen of Gems: opal.

The Australian Outback's wildest treasure hunters face even bigger challenges in their quest to strike it rich, as they seek the legendary Queen of Gems: opal.

The Bushmen’s drill rig loses a vital pin, forcing 74-year-old Les to undertake emergency repairs four metres in the air. The Digi Diggers flooded mine wall collapses as Josiah and Lisa attempt a new method of extracting Yowah nuts.

The Bushmen struggle to locate the source of water flooding their mine. The Misfits are forced to work Issy’s mine Honey Hole as they wait for bulldozer repairs. The Blacklighters are forced to help a fellow miner on a dangerous night dig.