Otávio reveals to Rodolfo that Afonso is interested in making alliances with the kingdoms of Cália to overthrow him from the throne of Montemor. Virgílio tells Catarina that Rodolfo will capture Afonso. Selena warns Amália that Afonso will be betrayed. Afonso realizes that he was betrayed by Otávio. Rodolfo orders the guards to arrest his brother.