The Blacklighters are forced to move their 10-ton processing plant to a new claim. The Cheals use abandoned truck parts in an attempt to fix their agitator machine.

Joe and Tash search on the surface with hand tools after the Taranto brothers fail to bring up any color. The Opal Whisperers try constructing a noodler from scrap material. The Misfits narrowly avoid an avalanche.

The Bishop mines the support pillars in a mammoth new claim. The Tunnel Rats risk electrocution while using their one-ton digger to mine for crystal opal. The Misfits hunt for Andamooka opal in isolated mines in South Australia.

The Tarantos' excavator grinds to a halt at the bottom of their mine. The Cheals also face machinery failure as Rory busts their digger underground. The Bushmen's roof is on the edge of collapse.

JC returns to White Cliffs after his accident. Blacklight Xavier misses a massive pocket of opal passing through the noodling machine. The Tunnel Rats start their season in a vermin-infested mine.

Rory and Oscar are forced to operate their dad's 20-ton drill rig for the first time. The entire Tarantos family is struck down by sickness as they struggle to find Opals on their massive claim. The Bushmen build a dangerous mine roof.

The Blacklighters break their excavator while trying to break fresh ground. The Young Guns enter a dangerous mine in an attempt to find pineapple opal. Isaac and Sofia, the Opal Whisperers, work their own claim for the first time to hunt for cathedral opal.

The Young Guns' season is threatened when JC is injured at a steer riding fundraiser. The Bushmen finally strike opal while digging on the boundary of their claim. The Cheal's struggle to get to their claim after weeks of rain.