A young couple, Lisa Younger and Jared Vandenberg, escape the Los Angeles rat race for the quiet life in Joshua Tree, California but paranormal visions and voices quickly turn the house of their dreams into a house of nightmares. They enlist the help of a spiritualist, Alex Damiano, to help exorcise the premises but this only awakens and angers the demonic presence that lurks within. When the town Sherriff, Dennis Woodruff, becomes involved, he discovers that another family mysteriously disappeared 10 years earlier without a trace and he also becomes entangled in the web of evil horror.

When a younger girl called Emily Rose dies, everyone puts blame on the exorcism which was performed on her by Father Moore prior to her death. The priest is arrested on suspicion of murder. The trail begins with lawyer Erin Bruner representing Moore, but it is not going to be easy, as no one wants to believe what Father Moore says is true.

A troubled evangelical minister agrees to let his last exorcism be filmed by a documentary crew.

A troubled evangelical minister agrees to let his last exorcism be filmed by a documentary crew.