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.

Álvaro is the only one who can tell what they found in Paradise. Javi has a strange encounter in the hospital and discovers that someone is after them. Costa tries to shed light on the whereabouts of the missing girls.

The boys are left without allies so Javi decides to look for the Undead at the town fair and follow them to his sister. Olivia discovers her grandmother's red notebook and begins to feel a supernatural gift awaken in her.

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.