Almost two years after a devastating loss, the Duke of Castamar hosts a big party. An agoraphobic Clara is forced to prove herself at her new job.

When the king goes missing during the party, Diego and his friends search for him. Meanwhile, Clara makes an unexpected discovery she must keep secret.

Amelia has shocking news for Enrique. The queen asks Melquíades to covertly find an important document. A fire threatens Rosalia's future at Castamar.

Singer Carlo Broschi is invited to perform a concert at Castamar. Diego meets a young woman and Clara gets jealous. During the party, tragedy strikes.