The history of Barbastro’s treasure had almost been lost in time. For nearly a century, no one looked for it. Since Sancha de Aragón, no other queen had searched, because they believed that Dona Sancha had found it and that with the money she had founded the Monastery of Sigena. But then María de Luna arrived: The Great María de Luna.
María and Martín el Humano had not imagined they were going to reign. But a stroke of luck changed their lives, and suddenly they were the King and Queen of Aragon.
When it happened, Martin was in Sicily, and Maria had to stop the Count of Foix and the widow of the former king, Violante de Bar, who, under the pretext of being pregnant, aimed to occupy on the throne.
Maria, who was a great strategist, saw that first of all she needed money to be able to conquer, defend what she had conquered, and then reign in peace. Then she remembered the legend of Petronila. The story mentioned two locations that her husband had given her as a dowry: Bolea and Loarre. What if Queen Sancha had not found the treasure? Her lands were included in the manuscript, and it was only a question of solving some clues. Maria, who was incredibly intelligent – (it was not for nothing they nicknamed her “the Great”) – decided to look for the treasure.