Donnie confronts poachers, who appear to be stealing gold from his lease, and a disaster dam-wall break threatens to end all hope of repaying their investor on time.

The Clermont Diggers come up with a new plan to try and boost their daily gold output. But the radical strategy has deep flaws. The Rookie Miners unearth the biggest nugget of the season.

It's D-Day for the Clermont Diggers. They have just 48 hours to repay investor Dennis and now Leigh has gone missing in action. A $250,000 nugget is found close to the Ballarat Crew's mining lease.