It tells the story of Manuela and José. Even though they are delighted with taking care of their grandchildren, they are a bit fed up with no longer having time to dedicate to themselves.
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.