| Director | Dharani |
|---|---|
| Genre | soundtrack |
| Country | India |
| Budget | ₹7 crore |
| Box office | ₹12 crore |
Arumugam is a kind-hearted man whose village is suffering due to a chemical factory which releases toxic waste into the river. The villagers decide to petition Minister Kaalaipandi, requesting him to close the factory. Arumugam and his childhood friend, Eswari, along with her grandmother Mundakanni, leave to Chennai to meet Kaalaipandi, who has won from the village's constituency. The three reach Chennai and stay with Narayanasamy alias Narain, who also belongs to the same village, but is settled in Chennai. Swapna is a fashion model who also lives near Narain's home and gets attracted to Arumugam, whereas Narain loves her. Arumugam meets Kaalaipandi amidst a heavy crowd and conveys the problems faced by their villagers due to water pollution. Kaalaipandi assures that he will take swift action.
Meanwhile, Sornakka and her brother Aadhi are local goons who are involved in many illegal activities, with Kaalaipandi supporting them. One day, Eswari accidentally collides with Aadhi, following which he tries to hit her, but is saved by Arumugam. In the ensuing scuffle, Arumugam fractures Aadhi's hands. Sornakka and Aadhi set an eye on Arumugam and decided to trouble him. Along with Kaalaipandi's help, Sornakka and Aadhi kidnap Arumugam and injure him. Kaalaipandi also informs that he will never take any action against the chemical factory in his village. Swapna rescues and treats Arumugam. Arumugam discloses Kaalaipandi's true face and the culprits behind him to Eswari and Mundakanni. Arumugam decides to take revenge on Kaalaipandi and tarnish his image among the public. Arumugam uses Kaalaipandi's memopad and forges a letter using Kaalapandi's signature with the help of Swapna, praising an adult film and requesting it to be published in a daily newspaper.
The newspaper editor believes it and publishes it the next day. This brings agitation among political parties and people demand resignation from Kaalaipandi. Sornakka decides to kidnap Swapna and make her approval against Arumugam but he saved her. After getting their plan failed. Sornakka and her gang plans to finish Arumugam and his people. Knowing this, Arumugam sent Eswari and her grandmother to their village but on the way Sornakka and her gang injures Eswari. Enraged, Arumugam admits Eswari and there he meets Sub-Inspector Karunakaran, who was being stated as mental by Kaalapandi and Sornakka. Karunakaran is a sincere police officer who had helped Arumugam by arresting Sornakka's brother under the latter's eye-witness. Kaalapandi make Karunakaran to release those gangsters and states that the latter is an abnormal person. To take revenge, Arumugam makes Karunakaran escape from the hospital. Karunakaran kills Aadhi and his two brothers and says that Kaalpandi ordered him to do this. Kaalaipandi decides to bring back his lost image by staging a fast until death event, which will bring sympathy among citizens.
Arumugam mixes his village's dirty water into the drink served to break the fast. Arumugam disclosed about the water to the media that it is contaminated water which was there in his village. He also reveals that he came to the city to tell about the problems arise from the chemical factory to the minister. But after knowing the dark side of the minister, he wants to show it to the public. He will reveal who's the minister and what his planning towards Government. Fearing his position, Kaalaipandi and Sornakka plans to kill the Chief Minister and put the blame on Arumugam. Arumugam thrashes Sornakka's gang members and Arumugam beats Sornakka in which she is beaten by a Lorry to death. Arumugam gets to know from Kaalpandi's P.A., Hari, that Kaalpandi is going to kill the C.M and puts the blame on former. Kaalpandi attempts to kill the CM in the hospital while putting the blame on Arumugam. But Arumugam saves the C.M intelligently by screaming that hospital is bombed. Arumugam is arrested. Kaalaipandi tells Arumgam that he kills the CM inside the ambulance. When Kaalaipandi once again tries his luck to kill the CM, Arumugam uses his skills and gets Kaalaipandi killed by police officers who were aiming for Arumugam. The CM exposes Kaalaipandi, while Arumugam and the villagers celebrate as the CM takes action to close the chemical factory.