Isabel

Isabel and Alfonso live happily in Arévalo with their mother until King Enrique IV orders them to Segovia, where they're resented by the queen; in a hostile court, they face political intrigue and grow up fast.

The nobles, led by Pacheco and Carrillo, accuse King Enrique of kidnapping Isabel and Alfonso, favoring Beltrán de la Cueva, and fathering Juana; Enrique's decision to negotiate weakens his power, yielding to noble demands.

Isabel and Beatriz are now of marriage age but cannot choose their husbands; Pacheco plots his next move.

A tragedy shakes the court; Isabel's life will change forever, forced to make a decision: obey Henry or rebel.

Alfonso's death shifts everything; Isabel must choose between the crown or obeying a weakening Henry IV.

Fernando of Aragon seeks a powerful wife in Castile to gain allies and wealth; Isabel fights to avoid being married off to some European king who would take her far from Castile.