15th century. On the Iberian Peninsula, the Reconquista is slowly dying out. But Catholic monarchs, whose fate is to unite under their rule the kingdoms of Castile and León, the Kingdom of Aragon, the Emirate of Granada, and the Kingdom of Navarre, have already been born—and soon will be ready to announce themselves to the whole world.
And it would be good if, at their side, there were a man from the future—whose mission is to find those very thirty pieces of silver, which can change the entire world or just one destiny.