 Paranormal investigator Stacey Jones lives in Syracuse, New York with her husband Lloyd and teenage son Jamie. After Jamie tags along a on cemetery investigation, he discovers a strange marking scratched into his leg. In the following weeks, he hears unexplained noises in the house and watches items fly across the room. Soon, his behavior deteriorates, as does his state of mind. He turns to his mother for help, but she assigns logical explanation to illogical events. When Stacey witnesses a demonic attack on Jamie, she can no longer evade the truth. She calls on her friend and colleague John Zaffis to save her son from an entity bent on possessing his soul.