In the latest adventure in the career of Jim Hatfield, the famous Texas Ranger is pounding the danger trail in pursuit of the mysterious secret of a lost Spanish mine. An old Indian legend helps Hatfield in his perilous quest, as greed-maddened men murder and plunder in the hunt for a map of the mine's location. This classic western full of break-neck action and hard-riding thrills builds to a surprising conclusion as Hatfield rounds up the instigators of a sinister plot.