Veerasimha Mannadiar gets killed by Hyder Marakkar, a notorious criminal. Thereafter, Veerasimha's brother, Narasimha Mannadiar, decides to avenge Veerasimha's death.

Enroute Madras via train, when three friends get falsely accused of a mysterious homicide, they escape and desperately search for the real killer.

Kattalan Porinju and Jose are friends as thick as thieves. Mariyam and Porinju have an unrequited love story that has Jose invested in fulfilling. Chaos ensues when a skirmish pulls in all three of them in a series of violent outbursts.

Advocate Ramesh saves Devan from a murder case. Later, he realize Devan was the actual culprit. Ramesh tries for a payback, unaware of Devan's real intentions and the reason for the murder.