When struggling artist Leo inherits his great-aunt's creepy Victorian home in Mistletoe, Massachusetts, he discovers a hauntingly beautiful antique mirror in the dusty spare room. Soon his reflection starts moving independently, speaking with cruel knowingness, and revealing terrifying visions. With help from a skeptical scientist and his late aunt's hidden journals, Leo learns the mirror is a "soul-mirror" created by a 19th-century occultist—a psychic parasite that feeds on human emotion. To destroy it, he must confront the darkest truth about himself and speak it aloud before the mirror claims him forever.