La Caza. Tramuntana

11yearold girls Ana and Lucía, disappear in Monteperdido, a town in the Huesca Pyrenees, after leaving school. Five years later, one of the girls appears; she has been in a traffic accident and is unconscious. The driver is dead.

Lieutenant Baín and Sergeant Sara Campos know that they are in Ana's hands; the girl who has returned five years after the abduction. She is all they have to find out what happened. However, Ana's testimony hardly gives them information.

The Civil Guard carries out the first arrest in the course of the investigation. The agents feel that they are getting closer to the truth, but it is not well received in the small town of Monteperdido.

Lieutenant Baín and Sergeant Sara Campos are managing to rebuild Ana and Lucía's years of kidnapping. They know more about the kidnapper and understand better the hell the girls suffered.

Sergeant Sara Campos has to make an enormous effort not to control of the investigation. When no one trusts her, she finds a clue that brings them closer than ever to Lucía. Meanwhile, Ana begins to come out of her shell.

How far are the residents of Monteperdido willing to go to keep their secrets safe? The investigation does not stop and Lucía's parents see the possibility of finding their daughter alive going away.