Mark gets back on the heavy machinery that nearly killed him.

The Mooka Boys face the new season without Chief mechanic Leif Tanzer. Opal thieves have ransacked The Bushmen’s claim.

When the excavator breaks down, Mark comes up with a solution that ends up costing a small fortune. Lee and Roger's old dry rumbler refuses to start.

A road trip to Diggers Gully pays off for the Opal Lovers. Taking a gamble on their Turners Rush claim doesn’t seem to be paying off for the Cheals.

The Bushmen's bad luck continues when Rod and Les near-destroy Sam's hoist while helping set up her new claim.

The Misfits receive a tongue lashing from 'Opal' Joe Kalmar for not producing enough opal. The Cheals' giant prospecting drill is crippled by mud.

The Bushmen are greeted by a fierce creature in their underground mine. The Opal Lovers enlist the help of some friendly backpackers.