The producers don't even bother trying to find a plausible theory for these shows any more. They've beaten the target audience into submission, so now just spout some random nonsense and jump straight into amateurs ineptly looking for treasure.
This show posits the Aztecs, which to the producers is apparently just an answer they got wrong in history class, hauled their treasure to Utah or Nevada because the land is cheap there and the governments don't require filming permits or SAG-AFTRA cards.
What sets this show apart from other pre-fabricated-treasure-myth shows is instead of one group ruining the environment in one location, as with the Curse of Oak Island, we have three teams operating under three different but equally ludicrous theories trashing three separate locations. The amount of treasure found remains the same - zero - but the format allows for more widespread disruption of the countryside.
The acting is what you'd expect from people attracted to a treasure hunt that would have a better chance of success if conducted in their own backyards.
Three stars for another background noise show. No stars for insulting the memory of the Aztec people with this cockamamie premise. Three stars.