Spain, 1944. Officially, the Civil War has been over for five years, but a small group of rebels fights on unbroken in the northern mountains of Navarra. Dreamy 10-year-old Ofelia moves to Navarra with her delicate, pregnant mother Carmen, to become acquainted with her new stepfather, Captain Vidal, a Fascist officer under orders to rid the territory of rebels. Ofelia, who is fascinated by fairy tales, discovers an overgrown, tumbledown labyrinth behind the mill. In the heart of the labyrinth she meets an ancient faun who claims to know her true identity and her secret destiny. But first, she must complete three tasks before the moon grows full. And no one must know: not her ailing mother, or her new friend, Mercedes. Time is running out, for Ofelia and for the rebels. Both will have to battle hardship and cruelty in order to gain their freedom. But, who can be trusted in a time of lies and danger? Is the faun telling the truth…? And if not, who is?