In an inaccessible place between the mountains and isolated from the world, a school is located next to an old monastery. The students are rebellious and problematic young people who live under the strict and severe discipline imposed by the center to reintegrate them into society. The surrounding forest is home to ancient legends, threats that are still valid and that will immerse them in terrifying adventures.

Bárbara Vázquez quits her job at the police and begins working at Zentral Risk. The team fulfills their first mission, which culminates in an intense negotiation with one of the kidnappers.