Two retired colonels are at loggerheads with each other because one of them had been a traitor to the country. The grandson of the traitor and the grand-daughter of the other colonel fall in love but have to surmount a number of obstacles, including the one created by the girl’s grandpa, before uniting in matrimony. There is also a Brahmin’s daughter who loves the coloned’s grandson. In the end, the Brahmin’s daughter sacrifices her life to save her beloved. The traitor colonel also atones for his treachery.

Surya (Arjun) and Prakash (Prakash Raj) meet Priya (Abhirami) in a train as strangers and become friends. Surya loves Priya, whereas Prakash lusts about her. Priya starts liking Surya. This makes Prakash envious, so he starts showing off his villainous image. The rest forms the story which rather forms a normal ending.

Based in Kancheepuram, Surya/Arjun makes a living as a con-man on the North Zone, and is assisted by his girlfriend, Baby; while the South side is presided over by Pashupati. When a Kolkata-based contractor hires the latter to kill District Collector Jaianand/Kishan, Surya decides to defend him – this results in his finding out that Jaianand is his look-alike. Jaianand’s terrified fiancée, Shanupriya, then hires Surya to not only protect but also impersonate Jaianand – a move that will drastically change everyone’s lives – especially when Kishan refuses to let anyone take his place.