When Sarah's young son Miles begins to show disturbing behaviour she believes that an evil, possibly supernatural force has overtaken him. Fearing for her family's safety, Sarah grapples with her maternal instinct to love and protect her son while investigating what - or who - is causing his dark turn. She is forced to look for answers in the past, taking the audience on a wild ride; one where the line between perception and reality becomes frighteningly blurry.
