'Daivathinte Swantham Cleetus' is set against the backdrop of theatre and explores the lives of theatre actors through Cleetus (Mammootty), a dreaded long-haired rogue. He surprises the parish priest (Siddique) by his uncanny resemblance to Jesus Christ in looks and mannerisms, and is consequently chosen by the priest for the role of Jesus Christ for a light and sound show at their upcoming festival.
His violent and criminal background reveal themselves during rehearsals. Yet, the priest decides to persist with him in the belief that the experience of performing the noble character will lead to his transformation.
Things change in the life of Cleetus after that. Events that occurred in the life of Jesus Christ start getting mirrored in his life as well. What happens to Cleetus and the people surrounding him form the rest of the story.