Deep in the wilds of the New World, Antonio de Erauso begins to write a letter to his aunt, the prioress of the Basque convent he escaped as a young girl. Since fleeing a dead-end life as a nun, he's become Antonio and undertaken monumental adventures: he has been a cabin boy, mule driver, shopkeeper, soldier, and conquistador; he has wielded his sword and slashed with his dagger.