While on vacation, Fay's father (Rhys Ifans) is diagnosed with multiple sclerosis. Returning to school, Fay (Sophie Turner) is cast in the school production of ''Macbeth'' as Lady Macbeth alongside Drew (Gregg Sulkin), a boy whom she likes. During the first rehearsal, Fay is nervous and keeps forgetting her lines. Her teacher, John (Jonathan Rhys Meyers) advises her to look at Roman Polanski's 1971 version of ''Macbeth (1971 film)'' for inspiration. Fay goes to the school library to pick up a copy and, while there, is terrified as lights begin to flicker on and off. She hears the sound of someone chasing her. Shortly after she runs off, she is found by a group of her friends who have seen and heard nothing.