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.

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.