Spoilers ahead. Coverage follows the scope labeled below.
Complete story — includes the ending
Sarah Miller, her boyfriend, and her children have moved into a haunted house. Sarah feels that something supernatural is present in the home and frightens her children at night. Her boyfriend remains skeptical of all of this, refusing to believe a ghost is haunting the house. In talking with her neighbor, she finds out that the previous tenants held black masses there. As a demonic presence tries to take control of the family, Sarah runs to a religious demonologist for help, who prepares a powerful ritual to extinguish the evil in the house for good.