The Rookies face potential disaster from the get go; for Col's Crew, their mining quest is derailed by a serious illness.

Rookie Justin has cracks in his equipment and his relationships; Col's Crew are a man down and on their last drum of fuel.

The Cooke Brothers' season is off to a bad start; Col's crew is called on an emergency repair.

Opal Queen Kelly needs a big find underground or risk going broke; Aaron and Greg's Dragonfly claim might finally pay off.

Col's Crew must bring out the old machines to hunt a new opal seam.

Col's Crew are on a crash course as his reoccurring illness slows them down.