In their attempt to exonerate an innocent man, a group of social justice warriors raid an abandoned campsite in search of a serial killer. But, one by one, they are eliminated until it's just one person left against the prolific killer.
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.