As the film begins, in the mid 1980s Thriunelveli, Arivudai Nambi is killed by his rivals, who fear that their position would be threatened if he were to make it big in politics. Arividuai Nambi's wife commits suicide after the sudden death of her husband. Eventually, Arivudai Nambi's father looked after and cared for his grandson.

Decades later, Arivudai Nambi's son Tamilarasan is accidentally drawn into the murky world of behind-the-screens politicking when he is jailed due to admitting to having hit someone on the road. Two gangster-type baddies with political backing become his enemies, and this, in turn, brings him closer to Karunakaran, a political heavyweight who has his own ambitions.

A minister sees Tamilarasan as an enemy because he sees him as Nambi, whom he had conspired to murder and later killed. Meanwhile, Tamailarasan had a friendly relationship with Anjana after she accidentally hit him on his motorbike. Machinations and counter-machinations grow with the growing political ambitions of Tamilarasan, whose rivals will not let him and his wife, Anjana, live in peace. Tamilarasan boldly faces all this in his game of one-upmanship and realizes his dream of growing big in politics, like his father.