In 1462, the Prince Charles of Viana, firstborn of the King John II of Aragon and rebel, accepts to appear before the Parliament in the city of Lleida although he knows it could be another trap of his father. When Charles arrives at the throne room, he is accused of treason and instantly arrested. Joanna Enriquez, the second wife of the king, has hatched a plot against him with the sole aim of obtaining his signature. A signature by which Charles would relinquish his dynastic rights over the Crown territories of Navarre and Aragon in favor of his stepbrother the Infante Ferdinand. Now, Charles has only two options: either sign or die.