In New Mexico, the Villescas family decide to risk everything by bringing in more heavy machinery and a full crew for one final push to find Conquistador gold. In Nevada, the Miners’ years of Aztec research is threatened when the Sheriff’s Department launches an investigation into a grave located directly on their treasure site. In Utah, the Dillmans call in a geophysicist to pinpoint underground caves and caverns, leading to one of the largest finds of their family’s 56-year hunt.