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?

Shakti (Madhavan) is a young man from a village with no job but much ambition and dreams. As he sees his life pass him by, stuck in a rut in his hometown, he decides that he will try his fortunes elsewhere. Chennai beckons him and off goes Shakti to join his uncle Kirikalam (Vadivelu), who has a stall of magic tricks at an exhibition. Kirikalam is not really a magician, but is posing as one, and his amateurish tricks don’t exactly bring in big crowds.
Next door to Shakti and Kirikalam’s stall though, is one ever-populated with visitors. The reason: it’s an all-girls stand, with mermaid costumes as the theme. Velli (Reema Sen) is the ‘head mermaid’ at this stall run by her sister, and bitter quarrels between her and Shakti ensue, when he feels that she and her team are unfairly taking their customers away, and she has this impression of him being an unsavory character. This misunderstanding is seen at different occasions where Velli and Shakti just happen to be in the wrong place at the wrong time — be it when Shakti gets off the bus from his village, asks for directions and is told to follow Velli, walking in the distance (Velli thinks he’s a womaniser) or when Shakti finally catches up with a miscreant who had picked his pocket and demands his money back — only Velli walks into the scene only at the demanding part. This whole collage of scenes is animated, with Kirikalam and Shakti trying to woo customers back to their stall, Shakti and Velli getting into arguments, and a general state of “fun” ruckus. Of course, love has been brewing as an undercurrent between the two young people.

Krishna Kumar (Prabhu Deva) is a happy go lucky Tamilian who works in Mumbai. He spends his time searching for his dream girl. He wants his life partner to be educated and have supermodel looks. He doesn’t want a country girl for a wife. His grandmother is on her deathbed and his father wants him to get married. His father with the aid of his grandmother chooses a girl from their village. He tries many times to stop the marriage but nothing works. He gets married to the girl, Devi (Tamannaah) unwillingly. He tries to get rid of her and shifts to a new house to hide her from his friends.

A seemingly meaningless journey of an old man and an EMT specialist in an ambulance becomes unexpectedly meaningful for both of them.

The story revolves around 3 generations where the three individuals played by Santhanam and they have no relation to each other. The mysteries and correction of mistakes in the past forms the story.

After Chennai-based Shakhti Mathur gets into fisticuffs with goons, his mother, Kamini, decides to send him to her parents’ house in the country. He re-locates there, and ends up falling in love with Neelima Pandey, who is betrothed to Karan Joshi, and the only daughter of Shankar Pandey, who has total control over a town called Thiruvatchi. When Shankar finds out, he has Neelima forcibly abducted, even cancels her wedding with Karan, and decides to wed her to Bhairav. Shakthi’s attempts to rescue her will not only jeopardize his life – but also the lives of his parents – who are being held captive by an enraged Shankar and his army of goons.

A minister on his deathbed reveals to an MLA the whereabouts of billions in cash that he has stashed away. However, the minister’s relatives are vexed when the MLA loses his memory in an accident.

The plot begins with a man named Sundara Prasad, who comes from a traditional Hindu Brahmin family. He meets and falls in love with a girl named Leela Thomas, whose family is Christian. The hero has an idea, even though he is aware that the family will be upset if they accept the relationship between them. But as a result of the entire process, both end up living a lie-filled existence and getting into problems.

The film portray the life of a happy-go-lucky-youth named Shiva (Silambarasan), and the different women he meets in his life. All hell breaks loose when Shiva’s equation with his fiancee goes for a toss. What causes friction between the couple? Does Shiva unite with the love of his life?

Muthaiya, a male Karagattam dancer, falls in love with Kamakshi, a female Karagattam dancer. But they are not able to confess their love for each other due to their egoistic nature.

A young man from a weaving family vows to restore it to its past glory by taking on a textile magnate.

An orphan girl dreams of becoming a ballerina and flees her rural Brittany for Paris, where she passes for someone else and accedes to the position of pupil at the Grand Opera house.