A shape-shifting snake-woman, who is in search of her lover, who she lost two decades ago, sets out to win his love again.

Sathyamurthy alias Sathya is the son of a school teacher in Kumbakonam. Vimal is a happy-go-lucky youngster, who yearns to do business. To achieve his 'mission', he borrows money from all quarters and is almost drowned in debts. Even as his father advices him to start leading life in a right manner, enters Selvi, a student. Sathya gets acquainted to Selvi and his life takes a turn. Meanwhile, Selvi gets into trouble and the baton is passed on Sathya to ensure that all goes well. How Sathya helps her overcome troubles and does romance blossom between the two forms the rest.