Opal fever has struck. In South Australia, rookie miners Daniel Becker and Justin Lang leave their lives behind, risking all to chase an opal fortune.

Rookie miners Justin and Daniel tread a dangerous path deep underground in an abandoned mine. Meanwhile, Kelly and Al search for the rare, valuable black opal.

Mick Cooke's mining operation grinds to a halt when the conveyor belt rips on a vital piece of machinery. In a desperate need for cash, Mick heads out of town on another job.

After the birth of Daniel's child, the Rookies return to Coober Pedy. Kelly and Al battle the clock, the weather and a deadly cactus, in their hunt for the most valuable opal.

Brothers Peter and Mick Cooke face off in an epic scrapheap challenge to build a monster opal hunting machine. And, the rookies resort to dangerous night time hunting.

Desperate to move more rock, the rookies get a lesson in the dangerous art of bomb-making. Plus, Kelly is forced to sell her precious reserve of stones.