Mohan Natarajan

Samrat is a psychopath who wants to take revenge on the person (Sundar) at any cost, who killed his father and damaged his mother's conduct. He believes that his late mother is still alive. Samrat wants to impose the same fate as Sundar's daughters. What transpires later forms the crux of the story.

The film begins with Siva escaping from jail, Siva is a convict who failed to kill the politician R. K. twice. At the transfer of power, R. K. will take oath as the new chief minister of Tamil Nadu, so he deploys heavy security to protect him from Siva. Before that, Siva manages to kidnap R. K. and hauled him to a television station. Siva tells his past to the audience and the reason behind the kidnapping.

Gautham meets Dr Rajasekhar, a psychologist, to learn about his memories pertaining to a girl named Gayathri. Rajasekhar learns that he is looking for Shanmugam, who he thinks has killed Gayathri.

Aalwar is a traditional priest. He is devoted to his mother and sister. But the villainous elements Lal, Vincent Asokan, kill the sister and mother. Aalwar, with revenge ringing in his mind, ends up as Shiva the killer, even while working as a ward boy in a hospital. Shiva is out to make a statement against the venal forces. He sees himself as some kind of avatar — in fact, he bumps off the baddies under the get-up's of Lord Rama and Lord Krishna. In climax, Shiva turns up as Lord Narasimha and bumps off the last villain by placing him on his thighs and ripping apart his bowels and chest with his sharp claws.

Baasha, a local thug controls the whole village by his atrocities. Pazhanisamy, who relocates to the village, earns Baasha's enmity when he tries to end his reign.

Siva is an honest police officer who was brought up by the judge Sathyamoorthy, when his mother died. Sathyamoorthy has two sons : Aravind and Raja. The influential smuggler Mudaliar often clashes with Siva and Sathyamoorthy. Siva and the jolly college student Priya fall in love with each other, later they get married with Sathyamoorthy's blessing. One day, Raja rapes Mudaliar's daughter. The next day, Raja is found dead and Siva conducts the investigation. Ramesh admits to his father Sathyamoorthy that he killed his younger Raja. Sathyamoorthy decides to protect Ramesh at all costs while Siva wants to send Ramesh to jail. What transpires later forms the crux of the story.

The driver of a Metro water lorry falls in love with a girl from a very affluent and powerful family, and faces objections and threats to their relationship.

Two sons that are separated as children grow up in drastically different environments.