A plumber and his germaphobic son are forced to get their hands dirty to save the residents of an apartment building, when a genetically engineered blood-thirsty creature escapes into the plumbing system.
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.