Year 1288. The kingdom of Portugal is devastated by the fights between King Dionis (Dionisio I) and his brother Don Alfonso. With the wedding of Dionis and Isabel, daughter of King Pedro III, arranged when she was just a girl, the alliance between Portugal and Aragon arises. In the midst of the intrigues of the courtiers, Isabel takes refuge in pity, while she is mortified by the fact that she was unable to give an heir to her husband, who has several bastard children. In addition, Don Álvaro, the monarch’s confidant, hates Don Nuño, who defeated him in a duel, and makes Dionis believe that his wife is the lover of said gentleman. (FILMAFFINITY)