Setting: The setting of the story is based on the relationship between Kalaimaran referred to as Maran (Srikanth) and Sneha. Maran works in a Chennai Motor Co as an automobile engineer. He is one of the committee members of Poorani’s Social Upliftment Movement. They were making a campaign against the company department manager who refuses to promote him because of his schedule caste base. Poorani takes up the matter with company and represents in him the Human Rights Movement. The Department manager takes vengeance and attacks Poorani when she comes down to visit him at the factory. Maran has a clash with him and his rowdies and is subsequently sacked from the company.

He then meets Poorani at her home and discuss his future course of action and together meet a human rights lawyer, Puneswari (Revathy). She assists them.

In the course of this situation, Poorani tends to fall in love with Maran. Maran does not. He keeps his relationship very professionally. As with this turnaround in the life of Poorani she looks towards him for emotional support. She has no income nor does Maran. Once when Maran comes to see her at her home he meets Pournami. Pournami gives him a ride to his cheri. Maran likes her for her very practical life. Pournami tells him to get a job first. She recommends him to join in an automobile spare parts firm as a salesman. In the next three months he becomes a very successful salesman and is promoted to being sales manager looking after the company’s activities in Tambaram.

Maran regularly meets Pournami and love blossoms. Pournami tells him of setting up his own spare parts company if they were to get married and settle down. He works very hard towards and comes to see her at home often. Poorani gets agitated. Poorani wants him to pursue the case of human rights. He refuses to continue. She has an altercation with him in the midst of Puveneswari. He drops the case on the advice of Pournami. Poorani dislikes Pournami for that. There are regular arguments and altercations in the house between both sisters, Chellamah on Pournami’s side and Nithyanandan on Poorani’s side. Later at home Chellamah and Nithyandan continue the arguments to make the story more hilarious.