The story begins in mid-seventies Kerala where William, is a priest in the solitary church in a small coastal town. Rosemary, a young girl, who aspired to make a carrier in nursing co-incidentally, comes in contact with him. Although initially he was just a benefactor to her, soon a deeper relationship ensues between them spurred by an accidental physicality when they end up making love. This results into a phase of deep guilt and self-persecution for both of them individually.

But as is the want of such relationships, they are not able to keep away from each other too long and end up colliding again, sexually and emotionally. They became lovers. However, it remains a clandestine affair because the call of the ecclesiastical order expected William to remain a celibate.

The relationship staggers along with no promise and future. Few years pass during which Rosemary also goes through three abortions and phases of insecurity. Much as they try to keep their affair private, soon they become the object of gossip and derision of the small town society.

Possessed by his feelings for her, William is not able to reconcile the eventuality of parting from her. Thus, in order to avoid the social disapprobation, he proposes that her marriage is arranged with some such person who will honor the fact that Rosemary belongs only to William and he will not have any physical or emotional relationship with her. It will only be an illusionary agreement compensated by William. She is thus wedded to Graham, in a ceremony presided by William.

However the forces of Anti-Christ overpower the forces of Christ in William. The man of God gradually capitulates to the satanic powers besieging him and goes on a devilish rampage thereafter.