In the American Southwest of the 1950s, middle-aged vagabond Beaudray Demerille survives as a cardsharp who moves from town to town. But his latest victory brings him unwanted spoils in the form of Wanda Nevada, a fiery 13-year-old. At first Beaudray does everything he can to ditch Wanda — until the girl chances upon a treasure map. But Wanda and Beaudray aren’t the only ones after the loot, and they must contend with a ruthless pair of crooks.