The Blacklighters are forced into treacherous abandoned tunnels, searching for a new location. The Bishop and Scott dig overnight in a race against thieves.

The Misfits return to Death Valley, armed with an ancient 40-ton bulldozer, to dig their first open cut mine. The Cheals race summer storms in a last ditch attempt to rescue their disastrous season. Tensions flare among the Opal Whisperers.