In the mining town of Panamint, Dick Benton and his Riders of Death Valley keep an eye on crooked businessman Joseph Kirby and his gang. The tables are turned after Benton inherits the map to a long lost Aztec goldmine. As Dick and his compatriots search for the mine, Kirby's gang and his rebellious trigger man Wolfe Reade are on their own quest to steal the map and put Benton and his pals out of commission. (texte officiel du distributeur)