Witnessing the injustices against Native Americans by European settlers from childhood, Diego de la Vega, the son of an aristocratic Spanish landowner and a Shoshone mother, returns to California from school in Spain to reclaim the hacienda on which he was raised to seek justice for the weak and helpless. A swashbuckling adventure story that reveals for the first time how Diego de la Vega became the masked man we all know so well.