Henry (Alan Ruck) and Angela (Geena Davis) have been married for many years and have raised two lovely daughters, Charlotte (Brianne Howey) and Casey (Hannah Kasulka). However, in recent days, the family seems to be on the road to disintegration. Angela is tortured by nightmares all night, Casey often hears strange sounds coming from the walls, and Charlotte stays in the room all day. There are signs that this happy family seems to be harassed by demons. Angela finds Father Thomas (Alfonso Herrera) and regards him as her only life-saving straw. Later, the experienced Father Marcus (Ben Daniels) also knows about this. Soon, the two find that what they have to face is an evil force beyond imagination.