This Kurt Reid is a pilot who stands to inherit a fortune from his late grandfather (a pretty shady character), but only if he can find a vein of gold located somewhere in the wilds of the Yucatan Peninsula within a certain amount of time. In his efforts to do so, Kurt winds up involved with some other shady characters who can't be trusted, as well as a beautiful blond girl pilot and radio operator. Throw in an ancient Mayan pyramid and a bunch of bloodthirsty natives intent on having Kurt as the guest of honor at a human sacrifice, and you've got a rip-roaring, very entertaining story in the classic adventure pulp style.