The story revolves around a group of people who gather in a stately mansion, the scene of a massacre from the past, to perform the ritual of the 'Red Book'. With the help of spirits, they try to reconnect with their deceased loved ones.
Sarah's sleepwalking worsens as she grieves her daughter's death in a car crash that left her abusive husband comatose. She struggles to distinguish reality from nightmare as visions of him haunt their home.