Sathyamoorthy is the son of a schoolteacher named DK in Kumbakonam. Sathya 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 advises him to start leading life in a right manner, enters a student named Selvi. Sathya gets acquainted to Selvi, and his life takes a turn. Meanwhile, Selvi is in trouble because her uncle Pandiyan, a rowdy, wants her to marry him. This proposal was ignored by Selvi, and she hated Pandiyan because he killed her father. One day while goofing around with Sathya, Selvi loses the necklace that Pandiyan had given her. Sathya and Selvi escape to Chennai, but Pandiyan and a corrupt inspector come and trouble them. Sathya brilliantly switches on the police's cordless phone, through which the Assistant Commissioner of Police learns about Pandiyan and arrests him. The film ends with Sathya opening a cable TV station and becoming successful.