Mia (Ella Pennell Ella Purnell), a beautiful 13-year-old girl, stumbled upon a small box containing a strange and frightening story in a tree hole in her yard. The story tells that faceless demons want to be recognized by others, so they look around for children standing at the window, take them away and tear off their faces and stick them on their own faces. Mia was fascinated by the unfinished story and tried to continue it. Mia doesn't know that this is a story written by his father John Ferro (Cliff Owen Clive Owen) based on his real experience in his childhood as a construction worker. In the process, weird dreams keep bothering Mia. At the same time, an accident revived John's deep-buried fear. He recalled the shameless demons of his childhood. Father and daughter were harassed by demons at the same time.