John Form has found the perfect gift for his expectant wife, Mia. He gives her a beautiful, rare vintage doll in a pure white wedding dress. But Mia's delight with Annabelle doesn't last long. On one horrific night, their home is invaded by members of a satanic cult, who violently attack the couple. Spilled blood and terror are not all they leave behind.

Ignoring the eerie warning of a troubled mother suspected of child endangerment, a social worker and her small kids are soon drawn into a frightening supernatural realm. Their only hope to survive the deadly wrath may be a disillusioned priest and the mysticism he practices to keep evil at bay, on the fringes where fear and faith collide.