In 1336, Pedro, heir to the Portuguese crown, marries Constanza Manuel de Villena, a Castilian noblewoman, for political reasons; but the impulsive prince ends up giving in to his love for Inés de Castro, his wife's lady-in-waiting.
Alicia Palacios
as Inés de Castro
António Vilar
as Pedro I of Portugal
María Dolores Pradera
as Constanza Manuel de Villena
Gregorio Beorlegui
as Pero Coelho
Raul de Carvalho
as Diogo Lopes Pacheco
Antonia Plana
as Lorenza
Ramón Martori
as Fernando de Castro
Antonio Casas
as Álvaro de Castro
João Villaret
as Martim the Fool
Alfredo Ruas
as Álvaro Gonçalves
Erico Braga
as Afonso IV of Portugal
Ricardo del Mazo
as Ayres
