In 1965 Los Angeles, a widowed mother named Alice Zander (Elizabeth Reaser) holds séances for clients to speak to their dead loved ones, but her business is actually a scam. Using her two daughters to trick her clients into thinking that they are spirits, Alice continues scamming gullible customers by using a Ouija board.

Little does she know that by using the board, she has unwittingly invited authentic evil into her home. When her youngest daughter Doris (Lulu Wilson) begins to show signs of aggression and strange behavior, it is revealed that she was overtaken by a merciless spirit. Now, this small family confronts unthinkable fears to save her and send her possessor back to the other side.