While attending school in Madrid (and receiving fencing lessons on the side), Tessa Alvarado learns of her father's death and leaves immediately for her hacienda in California. Upon arriving, she discovers her father had been murdered and the peons starving because of the policies of the local tyrant with the connivance of the wealthy landowners. In a dream, she is visited by the ghost of her father who encourages her to seek justice for the oppressed and avenge his death. Through her servant's tarot cards, Tessa discovers it is her fate to use her skill as a fencer to become the vigilante, "The Queen of Swords".

When the men begin to disappear, the Queen of Swords springs to action. She discovers that the peasants are being framed for crimes they did not commit and sentenced to work in Montoya's mines. Montoya and Grisham hope the Queen will right the wrong and unwittingly fall into a trap they've laid. Will it be death to the Queen?