A young woman enlists in an underground game of pain endurance in the hope of winning the million dollar prize. She soon learns the real opponent is the man who's running the game, as he employs horrific methods to manipulate and defeat her.
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.