Lieutenant Baín and Sergeant Sara Campos are managing to piece together the years of Ana and Lucía's kidnapping. They learn more and more about the kidnapper and better understand the hell the girls suffered. However, Lucía's parents, especially Joaquín, are not willing to stand idly by. That's why they don't hesitate to use Ana to try to precipitate events and find Lucía as soon as possible. But one event marks a dramatic turn in the course of the investigation and in Sara Campos's life.

The investigation disrupts the lives of Lucía's parents, who become increasingly convinced they will never see their daughter alive. While Ana finds stability within her family, the townspeople see their lies and most intimate secrets exposed by the Civil Guard. No one is safe.