Spain, 1944. Officially, the Civil War has been over for five years, but a small group of rebels fights on in the northern mountains of Navarra. Dreamy 10-year-old Ofelia and her pregnant mother Carmen move to Navarra, joining her new stepfather, Captain Vidal. A Fascist officer, he is under orders to destroy the rebels. Ofelia discovers an overgrown, tumbledown labyrinth and meets an ancient faun who claims to know her true identity and secret destiny....