In the village Ammapatti, Maruthu Pandi is a coracle operator in day and the village protector at night. The villagers give him food in exchange of his work. Maruthu Pandi has a mentally ill sister Lakshmi who is pregnant and he takes care of Lakshmi like a mother. Kanagavalli, a dancer, slowly falls in love with Maruthu Pandi. Kanagavalli is in fact a police officer who wants to arrest Maruthu Pandi. Maruthu Pandi's real name is Manickam, and after a revealed flashback, police team come to Ammapatti to arrest Manickam. What transpires later forms the crux of the story.
| Writing | R. P. Viswam | Dialogue |
| Writing | Manoj Kumar | Screenplay |
| Writing | Manoj Kumar | Writer |
| Editing | Srinivas Krishna | Editor |
| Sound | Ilaiyaraaja | Original Music Composer |
| Directing | Manoj Kumar | Director |
| Camera | R. H. Ashok | Director of Photography |
