Wanting to get a higher paycheck as a nurse, Rose accepts an assignment, taking care of Peter, a crippled old man with dementia. While staying with the old man, Rose suffers sleepless nights feeling like something or someone is watching her. As she starts having creepy visions and paranormal experiences, she realizes that something is strange about the old man.
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.