Twelve-year-old Conor escapes into the fantastic worlds of monsters and fairy-tales. He must deal with his mother's illness and bullying at school. One night, he summons the least likely ally – the Monster, which rises from a tall ancient tree by Conor's bedroom window with terrifying magnificence, and they start telling each other stories. The adaptation of a critically acclaimed bestseller by Patrick Ness was directed by Juan Antonio Bayona (The Orphanage).