During a long journey, Astrid and Tristan stop at a remote cottage to spend the night. But they are not aware that in the woods nearby an antisocial trio are preparing to invade the home, bent on torture and murder.
The lives of six girls belong to different worlds although connected to each other through a doll called Molly, whose existence dates back to 1976, when she appeared among the rubble of the great fire of the San Carlos orphanage, in northern Spain.