Wealthy rancher Don Fernando de Vega sends for his grandson Carlos Hernandez, fearing for the ranch's future after his death. After Carlos is waylaid and seriously wounded, the Cisco Kid, who looks like Carlos, passes himself off as the long-awaited heir. However, he soon discovers a plot by Don Fernando's nephew Ricardo to inherit the ranch instead.
Romance of the Rio Grande
The Cisco Kid assumes the identity of a murdered rancher's grandson to uncover the identity of those seeking to take over the ranch.
