Sakthivel (Ajith Kumar) is an implicitly obedient son of a sincere policeman Rajarajan (Rajkiran). Sakthi and his father share the same dream: that of seeing him enter the police force. The entire family comprising 2 other daughters, the mother (Saranya Ponvannan), and a wastrel of a brother-in-law (Vivek (actor)) are cuddly and close-knit. Rajarajan is from the old school of life, and honesty is his watchword. In a venal system, this lands him in trouble often. Divya (Trisha Krishnan) is a charming college student. She has some comical run-ins with Sakthi and eventually falls in love with him. Elsewhere, Rajarajan, who books an MLA’s son for an offence, is hauled up over the coals and sent on a ‘punishment transfer’ to a place, which is run as personal fief by a local dada Varadarajan (Ajay (actor)). One thing leads to another, and Sakthi is unwittingly sucked into the unholy vortex. Just as he is about to join the police force, destiny decrees otherwise: his life is not going to be the same again. A father’s dream lies shattered while a son, despite his unwillingness, has to fight an honest war beyond the matrix of a law. It is a situation that is actually an emotional cauldron. How the father and son reconcile to the new reality is the story.