In a ruthless underground tournament, the world's top assassins fight to the death. But hidden among them is a rogue crew with its own deadly agenda: infiltrate the competition, survive the bloodbath, and take down the mastermind pulling the strings.
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.