In an underground facility, five scientists wake from cryosleep with no memory of who they are or how long they've been asleep. They soon make a shocking realization: a killer is hunting them down there, and may even be hiding among them.
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.