The plot is played out in the gloomy atmosphere of 15th-century Aragon and tells the romantic love story of Leonora and her troubadour Manrico. Manrico and the Count of Luna compete passionately for Leonora’s love. Although Leonora loves Manrico, the jealous Count will do everything possible to have her. Eventually, he and Manrico agree to a duel. Meanwhile, Manrico’s mother, Azucena, haunted by a horrible past, keeps a secret that affects both Manrico and the Count: years earlier, intending to avenge her mother’s murder by the aristocratic Luna family, she kidnapped their youngest son.