Sitharam (Arjun) is a well respected auditor who lives with his PA Muthuswami (Anu Mohan) in Chennai. Although being a short-tempered and tensed person, Sitharam is very good at heart who helps the people in need. He soon meets and falls in love with Kalyani (Sonali Bendre). After a couple of meetings she too falls in love with him by seeing his good nature.
But Sitharam faces problems in the form of another loving couple, Akash (Suchindra) and Akhila (Ruchita) due to an argument between Akhila and Akash and Akhila acts as Sitaram’s fiancé so that she can get rid of Akash just before he proposes to Kalyani. Kalyani, being an innocent, believes her words and goes away from Sitharam. Hence, Sitharam becomes the main antagonist of the film to make the lives of Akash and Akhila the living hells.

Leelatharan aka Lee (Sibiraj) hangs out with a bunch of merry youths who do practically any work and play football in other times. It is a strong-willed and thick-tied group. Chellama (Nila), a worker in a facility for the mentally-challenged, is also kind of a groupie. Life is all merry and mirth till she espies Lee & co, attempting an assassination of sorts on a minister. The bid fails, but Chellama is shocked and so are we. Why would this bunch want to take a crack at the murky world of politics and cricket?

Kokki arrives in the city to go to Malaysia for a job with the help of a friend. Somehow, he gets trapped in a situation where a superstitious gangster refuses to free him since Kokki brings him luck.