After the assassination of Flaín, the Count of Leon, many point at Ruy as the culprit. Meanwhile, the one from Vivar is forced to go back to Zaragoza, where he was sentenced to death for having slept with Amina, the Emir's daughter. In Leon, Urraca finds out that Jimena and Ruy are in love, and schemes a plan to gain benefit from this information.

After Sancha's death, the war between the three brothers is imminent. Sancho sets out to attack Galicia, but in order to do that he must pass through Leon. Alfonso can't decide whether to leverage that moment and attack him or to let him through. Meanwhile, Ruy struggles with the passion between him and Amina, and the pain that Jimena's betrothal to Orduño is causing him.