Two villages in the southern suburbs of Theni share the same God as their “Kula Dheivam”, and the idol is to be shared between them during festivals.
Oothukattaan is a rich big shot in his village. He has a grudge against the other village as he was insulted by them a long time ago. Since then, he promised himself to keep the God’s idol in his village. In order to destroy the neighboring village, he plans to evacuate the entire village population. He uses his power and wealth to stop government projects and welfare facilities from reaching the other village and make it a barren land, which forces people to evacuate and move to other places in search of livelihood. He helps the jobless youths in that village get jobs in neighboring cities, thus reducing the population of the other village.

A spoiled young heiress marries a poor man in order to inherit her grandfather’s property.

Ram is introduced to be an youngster who loves graffiti and doesn’t believe in everlasting love. He has gone through 9 loves in his life, and thinks that love between two people eventually dies out. As a person with strong morals, he is honest and wants to love life and live with open mind, open thought and open action with his lover. Jaanu (Genelia D’Souza) studies in the same college as Ram. He falls in love with her at first sight and goes onto wooing her. She eventually ends up falling for him, but wants him to promise to love her forever. Ram, of course, nonchalantly dismisses this and explains how he cannot love her forever. This leads to a clash of their ideologies. Ram shows Jaanu how even true love stales after a while and true love cannot stay forever, while Jaanu shows him examples of everlasting love, like her friends and her parents. However he makes it clear that love between two people is never the same as it first is. Ram doesn’t really bother about feelings of Jaanu and assumes that things work out for him with her because of how he feels for her without genuinely caring about how she feels and wants her future. Ram shows narcissism in most parts of the story.

Arjun (Arjun) is a carefree youngster who can’t work on a single job for more than three months. Everyone including his grandparents (SP Balasubramaniam and Lakshmi) considers him as nuisance. When Arjun’s grandparents ask him to take care of himself and leave to US, he starts a ‘bad news delivery service’ with his friend Karnan (Venkatesh Harinathan)! The idea is to convey ‘unfortunate’ or ‘bad’ news to people. In the process they stop the marriage of a young girl who is the sister of Arjun’s girlfriend Anjali (Aditi Chengappa). When Anjali comes to know about Arjun and his profession, she hates him and there comes an ego clash between Arjun and Karnan as well. Can Arjun solve all the complex issues and lead a happy life?

The story begins with a group of government officers coming to list the number of devastated houses. The officers promised them to give a big amount to build their house but in exchange for a little amount to register their name. So the illiterate villagers, who wants to make easy money, demolish their house. The officers turn out to be frauds. The village panchayat president (Vinu Chakravarthy) knows that the villagers will not interfere in his decision until they are uneducated. Sivaraman (Sivakumar), a new school teacher, tries to change their custom and the children are happy to learn at school. Soon, Sivaraman has trouble with the village head.

Ravi Kumaraswamy, a young man from Kochi suffering from night blindness, steals a Ganesh idol from his mother, who is a profound devotee. What happens next?

Viren (Abhay Deol) and Aditi (Ayesha Takia) are introduced by their families, but Viren refuses to marry because he wants to marry his girlfriend of three years, Karen (Apoorva Jha). Viren’s refusal creates tension between the families, as Aditi’s aunt feels insulted. However Viren and Aditi meet by coincidence, bond quickly and Viren invites Aditi to accompany him to Goa – he wants her to find out if his girlfriend Karen loves him or not.

The film is set in 1960s Chennai (Madras then). A police officer and a social worker give speech about ban of cigarettes in All India Radio. Then three men get out from a car . They were thieves and were headed by Eli (Vadivelu) a petty thief (who once aspired to become a police officer), who pretends to be a thief who has sold all his robbery items to a jewellery shop owner. The jewellery shop owner had no contact with him and his henchmen dressed as police take all the items pointed out and pretend to arrest Eli and loot the shop. He uses his tricks and loots many other places. One day he enters the house of retired police officer Mr. Rangarajan who had rejected him at the police selection. He loots everything except his photograph. When the current police I.G came there to meet Rangarajan, Eli pretends as though Rangarajan had vacated his house and he is performing rituals and not to disturb him. When the police officer meets Rangarajan on the way he is shocked to find that he had been tricked and Eli had looted the house.

Three women face challenges in their process of getting married. Rajkumar (Dinesh), who is in love with his colleague Kavya (Nivetha Pethuraj), is reluctant to marry her, owing to her superior economic background, so much so that he delays talks of marriage. Lakshmi (Miya) is visited by several suitors, and every one of them is rejected by her father (Nagineedu), whose greediness makes him wait every time for a suitor who is per the family’s status. Bhaskar (Lingesh) agrees to marry Susheela (Riythvika) but gets cold feet and calls off the marriage. The story unfolds, telling how each of the protagonists attempts to fight the dogma of arranged marriage.

A straight forward sub inspector is handed a murder investigation above his pay grade, during an ongoing tiff with one of his unscrupulous superiors.

Raghu, a software engineer, faces several challenges in his arranged marriage as he suffers from erectile dysfunction and tries to find a solution to his problem.

On the way to Chennai, Bala’s (Srikanth) bag and certificates get stolen in the train. But he has a look about him that endears him to a petty shop owner Sundaram (Haneefa), who provides him accommodation along with a few bachelors (Vayyapuri, Shyam Ganesh and Sukran) in the top portion of his house. Malar (Trisha) stays opposite this house and the bachelors are crazy about her. They are scared if the handsome and generous Bala will try to woo her and so they hatch a plot and frame him, so that Malar’s two brothers beat him up black and blue. Three strangers, who claim to be his true friends from Hyderabad, save an unconscious Bala. Now the true identity of Bala is told in a flashback by these friends, that he is a rich son of an industrialist (Rajeev and Fathima Babu). Malar saves Bala from an accident and soon they are in love. But her brothers take her back to Chennai, as her sister had already eloped with someone. The brothers do not want her to commit the same mistake and make her promise that she will only marry someone of their choice. Then there is another secret that nobody knows – Malar is suffering from some brain disease and will die soon. Bala comes to stay opposite her house to see and make her happy till the end.