In the wake of the suicide of a nun in a Romanian abbey, a haunted priest and a novice team up for an investigation that reveals the demonic presence that haunts the abbey as well as the nature of the evil that has taken hold of the grounds.
The events of the second part take place in France in 1956, where a priest is killed, and it seems that there is evil spreading from his death. Sister Irene finds herself face-to-face with a demonic force once again.