Three girls disappear in the Levante. Javi, brother of one of them, his friends Quino and Álvaro and Zeta, the high school bully, decide to look for them on their own. Together with her friends, Olivia and Bea, they discover a secret in the Paraíso nightclub related to the disappearance.

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.

Javi starts a race against time in which he has to gain allies and work on avoiding old enemies along the way.

With Javi and Zeta trapped, Bea and Olivia must take the lead on a rescue mission with an uncertain end.