Karthik(Yash) falls in love with a girl named Deepa(Bhaama) and when they decide to get married. Their parents are reluctant for accepting their marriage.

The film tells the story of Kamini (Namitha), who plans to get back at her ex-lover Santhosh Srinivasan (Srikanth) by re-entering his life as the wife of his boss John Kumaramangalam (Nassar). Santhosh is the creative head of a television channel called Teen TV (though it does indulge in political exposés). He is married to Savithri Duraisimaalu (Shruti Marathe), and his life turns topsy-turvy when John reinstates Kamini as the head of the TV channel, a promotion Santhosh had anticipated for himself. Following this, it is a simple story with Kamini starting to hurl sexual harassment accusations at Santhosh.

Ashok (Madhavan) and Julie (Sree Devi) have been friends ever since childhood and they don’t share any love interest. Ashok falls in love with Nandini (Jyothika), a rich girl with whom he marries, and although Julie’s closeness to Ashok initially irritates Nandini, she subsequently accepts it. Julie falls in love with a guy called Michael (Vineeth), a cricketer who’s hoping for a place in the Indian criket team and Ashok happens to be his main opponent. When Ashok gets selected, Michael’s father strikes a deal with Ashok that the marriage between his son and Julie will only take place if Ashok steps down and let Michael substitute him, to which Ashok agrees for friendship’s sake. When Michael learns of this at the end, he restores the severed ties between himself and Ashok, and the movie ends upon a happy note.

When stuntman Sambandham (Kamal Haasan) and Dr. Janaki (Simran) come across each other at his brother Anand’s (Abbas) and her best friend Malathi’s (Sneha) hastily planned wedding ceremony, they instantly develop a dislike for each other. They both have a very low opinion of the opposite sex, and staunchly believe marriage is not the way to go for the two newly-weds, whom they try to discourage from proceeding further.
Janaki convinces Malathi to test out her theory that men are after only one thing, by forcing Malathi to delay their consummation for three months. She is sure Anand will not be able to do so and this will prove to Malathi that Anand is just another low-class male, like all others.

Hell breaks loose for the families of a village where mysterious incidents take place after an unfortunate death on a very auspicious day. Later, a determined villager decides to uncover the truth.

Suma, is a bold, quirky and geeky school librarian who lives with her mother. Suma meets Victor, the school’s new English teacher, and as time passes, they get to know each other.

Young lovers defy their families, which are at odds with each other, and get married and migrate to the city. Can they make it big in the city?

Aravind (played by Jiiva) is a flirt who falls in love and marries Divya (Kajal Aggarwal). They have an argument and Divya breaks up with Aravind near a liquor outlet. She returns to his life after a long time only to seek divorce from him. He takes a blank cheque from her and puts another condition for signing the divorce papers. He wants her to live with him in his house for a week and do all the wifely duties such as cooking and cleaning. She agrees to this and the film goes south from there.

Kathirvel Murugan (Bharath) is a software engineer in Chennai. He shares his room with friend Sakkarai (Santhanam). Kathir hails from Usilampatti but wants to project him as city-bred and his ambition is to settle in USA. Kathir’s father Sevaka Pandian (Sampath Raj) is against his son’s attitude. An influential local chieftain, he is against inter-caste marriage and love. Kathir meets Nisha (Rima Kallingal), who too wants to go abroad. Nisha loses her passport, and Kathir helps her find it. Slowly, he falls for her. Meanwhile, Sevaka Pandian arranges for his son’s wedding with a High Court judge’s daughter Thangameena (Anuja Iyer). In the meantime, Kathir and Nisha get their visa and get ready to leave together for USA.
Kathir thinks that he has escaped from his marriage, and when he wants to propose to Nisha, he gets a rude shock. She informs him that she is going to USA for her marriage. In the meantime, Sevaka Pandian comes to know about their relationship and kidnaps her. Afterwards Kathir also comes to know about it and saves Nisha, but her marriage gets stopped. After 10 months, they both meet in the same country again. Kathir doesn’t want to see her, but his mind changes, and he tries to make Nisha love him. At last, they both fall in love with each other. Now they return to their hometown for their marriage. Initially, Sevaka Pandian doesn’t allow. Later Kathir convinces them and they both marry each other making it a very happy ending.

Anand (Sachin) is an advertisement photographer, he comes across Annalakshmi (Sunaina), who is conservative in her looks. After a few initial encounters, the girl develops love for him.But Anand has other plans. The mystery is soon unraveled and is made known that Anand hails from a family of doctors. When everyone thinks Anand will tie the knot to Annalakshmi, the twist occurs in the form of Anand accepting an arranged marriage. What transpires between the lead couple forms the rest of the story which ends in an interesting climax.Anand (Sachin) is an advertisement photographer, he comes across Annalakshmi (Sunaina), who is conservative in her looks. After a few initial encounters, the girl develops love for him.But Anand has other plans. The mystery is soon unraveled and is made known that Anand hails from a family of doctors. When everyone thinks Anand will tie the knot to Annalakshmi, the twist occurs in the form of Anand accepting an arranged marriage. What transpires between the lead couple forms the rest of the story which ends in an interesting climax.

An archaeologist gets involved in a situation where the brother of a girl holds him captive because he suspects him to be the girl’s lover. Although he escapes, he is soon arrested for her kidnap.

The film begins with a trio of friends in college (Malar, Mona, Gayathri). Mona falls in love with Karthik (Shiv Pandit) despite the advice of Malar (Manasi Parekh Gohil) who suspects Karthik to be a complete flirt. One day, while on a date, Mona mentions to Karthik, Malar’s views about him and this gets Karthik to start disliking Malar for interfering in his love life. When Karthik calls Mona, Malar picks the call up accidentally and they get into an argument with Karthik venting out his anger towards her interfering in his love life. Shortly later, he breaks up with Mona. Gayathri believing Mona was a wrong choice in Karthik’s life begins to date Karthik, while Malar is firmly against it. The relationship ends the same way as his relationship with Mona. A year or two later both Karthik and Malar work at the same software company on different floors in the same building. One day, while trying to call his friend on Malar’s floor, he accidentally calls Malar and the two realize their identities and presence in the building and the age-old feud resumes. Over lunch, both Malar’s friend (Vicky) and his own friend (Suja) advise him to sort it with Malar. Vicky questions why Karthik would fight with such a beautiful woman as Malar. Karthik not knowing what Malar looks like decides to take a look at her. When he sees Malar he falls in love at first sight, he then tries to reconcile with Malar, but Malar is not willing to forgive a flirt like Karthik. Karthik becomes desperate and begins to follow Malar and in a chance meeting orchestrated by Karthik he introduces himself as a sweet and kind person by the name of ‘Sundar’. Malar who has never met Karthik face to face, believes his false identity and begins to open up to Sundar.