Azhagiri (Narain) and his sister Shanmughapriya (Meena) are siblings who live only for each other. Azhagiri is a student and his sister is a lecturer. Saissa (N. Santhanam) and the crew form his sidekicks and Valayapatti (M. S. Bhaskar) is their professor, who invariable falls quarry to Saissa's unwitting jokes and intentional pranks. Azhagiri goes to Thambikkotai on an NSS field trip. There he falls in love with Kanaga (Poonam Bajwa). who is the daughter of Amirthalingam (Rajendran), a rich don of the village. Amirthalingam tries to kill government officers who want to repair a damaged bridge that connects the village with the outside world. The village has a connection to Azhagiri, his sister and their dead father, Shanmugam (Prabhu).