Javi and the gang chase a ghost to try to find out where the girls are being held. Javi manages to convey information to his father, but the Undead come forward with a masterful move.

The Undead deceive everyone by making a false revelation. The boys make a great discovery at the Aigües de Busot Spa. Costa discovers that the cases of three missing minors happen every three years in Levante.

Costa, Mario and Roca, Bea's father, receive very important information that guides them to the Spa. There everyone will discover something that can change their destinies forever.