A fatalistic car crash in Mexico city sets off a chain of events in the lives of three people: a supermodel, a young man wanting to run off with his sister-in-law, and a homeless man. Their lives are catapulted into unforeseen situations instigated by the seemingly inconsequential destiny of a dog.
Living with her tyrannical stepfather in a new home with her pregnant mother, 10-year-old Ofelia feels alone until she explores a decaying labyrinth guarded by a mysterious faun who claims to know her destiny. If she wishes to return to her real father, Ofelia must complete three terrifying tasks.