Basheer (Jagathy) is rescued by a cargo ship while lost at sea. Basheer has had a partial memory loss and he struggles to find out what has happened to him. The captain of the ship (Lalu Alex) tries to get him back to land, but he runs into several legal troubles due to the lack of documents with Basheer to prove his identity. Bhaskara Pillai (Mamootty), a lawyer decides to help out Basheer seeing his plight. The plot thickens when there's an attempted murder on Basheer.

After a keenly fought election, MKR becomes the new chief minister. When the opponents hire a psychotic killer to assassinate him, Perumal, a crime branch officer, is assigned to stop him.

Arul, who works in a mill, is the youngest of four brothers in a family of goldsmiths. Once, Arul's brother stole a chain due to financial circumstances. As Arul had taken the blame for it, he was labelled as a "thief" and seen as a black sheep by his father. Thus, he vows never to make a gold ornament ever again. Kanmani, who moves into the opposite house, begins by playing tricks on him, but eventually falls for his character. Arul doesn't believe in love, and keeps his distance from her. One day, when Arul's father scolds him in the temple,

Thiyagu is a medico who leads a masked gang of four to abduct corrupt politicians and bureaucrats who use the loophole in law to enjoy their prison term in hospitals or guest houses. Deiva, a schoolgirl and daughter of the police officer who is hot on the trail of the mysterious gang, has a crush on Thiyagu, but she is not aware of his real identity.