In the final week of the season, high temperatures are shutting down machines and pushing the miners to their limits. Struggling to set up their new open-cut mine, the Blacklighters take a chance on mining at night. The Young Guns search for black opal in Lightning Ridge, but a torrential storm forces them to work on a series of flooded dirt roads. The Bushmen risk it all in a dangerous area vandalized by opal thieves.

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