At the end of the 1920s, Corto Maltese was in Mexico, on a new mission for Bouche Dorée. He had to negotiate a lot of Mayan antiquities with an unscrupulous archaeologist. But, as always, nothing was going to happen as planned and our sailor found himself forced to transport a load of weapons for Christeros, these Catholic revolts fighting against the Republican government and its new anti-clerical laws. He would find among them two of his old acquaintances, Rasputine who had joined the orders, and Banshee O'Dannan, the Irish revolutionary.