Something is wrong in the Rance household. Angela Rance suspects demonic possession and enlists the help of two priests: the progressive, but naive Father Tomas Ortega and the broken holy warrior, Father Marcus Keane. Together they will be drawn into a nightmare beyond imagination.

Angela grows restless as her daughter's condition continues to deteriorate, and the demon turns its attention toward innocent victims. While Father Tomas is paid a visit by a familiar face from his past, Marcus journeys to an unexpected destination and receives guidance from a most unlikely source. With time quickly running out, the two priests must decide whether to defy the church by performing an unsanctioned exorcism.

The Rance family is engulfed in a firestorm of publicity; Father Tomas finds himself unexpectedly thrusted into the public spotlight, as his search leads him into a terrifying underbelly of the city.