Asha, a young woman belonging to a middle-class family, tries to change the arrogant and rich Arjun into a responsible person.

Thirumoorthy is a corrupt politician who plans to kill the prime minister as he lusts after his position. However, Sekhar, a young police officer, creates hurdles in his path.

Rajalakshmi is a multi-millionaire who is very proud of her wealth. Her son falls in love with Govindaswamy’s daughter. He is Rajalakshmi’s rival, and hence she always tries to humiliate him in front of everyone.

Karunamurthy (Kitty), an honest Home Minister is forced to help terrorists kill the current Governor to save his daughter Priya (Lisa Ray). Nethaji (Sarath Kumar), an upright journalist, runs a newspaper called ‘India’. He falls in love with Priya. Baba (Babu Antony) is a terrorist who smuggles arms with his right-hand Dharma (Vimalraj). Nethaji saves the scientist Shivashankari (Manimala) from terrorists, and Charan (Charan Raj), a police officer, congrats him and arrests Baba. Dharma hurts Nethaji’s sister and Ammu, and later kidnaps the latter. Dharma threatens Nethaji to kill Ammu, and Nethaji is forced to kidnap Shivashankari. Nethaji kidnaps her and saves his niece, and later, Charan arrests him. The rest of story is how he will be able to prove himself innocent and punish the terrorists.

Krishna (Ajith) belongs to a middle-class family, where his father is a womanizer and brought up Krishna as a good for nothing fellow. Krishna is also a youngster who likes to waste time his time, by hanging out with his friends and roaming behind girls. Vaanmathi (Swathi) is the daughter of a rich business woman who is very arrogant and does anything for money. For example, she even abandoned her husband when Vaanmathi was a baby for money. Vaanmathi is a girl who grew up to be a bully, by bringing a bunch of friends in her vehicle and making fun of every guy they come across. Krishna and Vaanmathi play tricks on each other and fight after they met but eventually fall in love, but Vaanmathi’s mother is not happy with that. She dislikes Krishna as sees him as her enemy number 1.

A man pretends to be the son of a long-lost royal family to steal a precious sword. However, his plan runs into complications when Indhu, the sword’s guardian’s granddaughter, falls in love with him.

Tired of his father’s disciplinarian ways and to avoid marrying a girl chosen by the latter, Raja runs away to Ooty. There, he is hired as a driver by the man whose daughter he was supposed to marry.

Sethu and Ranjini are lovers who attempt suicide but Sethu survives and gets sent to prison for a year. Upon his release, he becomes a dance instructor where a student, Malini, falls in love with him.

Balu (Vijay) comes to the modern city and stays with his friend who claims he has a job. Actually, he is also unemployed. Both of them are tenants of a girl named Sumithra (Sanghavi). First, Balu and Sumithra get into fights, but then their arguments and fights turn into love. Meanwhile, Sumithra’s cousin Mahesh (Karan) is also in love with her. One day, Balu witnesses a thief stealing a necklace, and when he tries to catch him, the thief inserts the necklace in Balu’s pocket, and Balu is blamed for stealing it. Sumithra starts hating Balu. Taking advantage of this situation, Mahesh creates a rift between them by hiring goons to attack them, and he blames Balu for that too. Balu explains his sad story to her grandmother Paattiamma (Nirmalamma) that he lost his mother during small age and could not endure the torture of his stepmother, so he escaped from home. Paatiamma believes him, but Mahesh takes revenge by setting up wires and making her paralyzed. In the hospital, Sumithra overhears Mahesh and his father (Vinu Chakravarthy) wanting to kill her to steal their colony. Balu pays the medical bills and attempts to commit suicide, but Sumithra saves him. Mahesh, who tried to kill him, is killed in a stampede. The film ends with Balu and Sumithra living happily.

Mridula and Arun are a young couple, who meet accidentally, and fall in love with each other. Both come from wealthy families, and are reluctant to get married unless they find out if they are suitable for each other on a long-term basis. So they decide to live together for one year. During this process, Arun tragically passes away, leaving Mridula devastated. Time goes by and Mridula is unable to get Arun out of her mind, and keeps on seeing him everywhere. Her family feel that if she re-locates abroad, meets new people, which may assist her to heal. So she re-located to Britain. Once there, she meets with a young man, Manu, who is attentive and attracted to her. Mridula appears to be recovering, and informs her parents as such, and even agrees to marry Mano. Then the next day, her parents are shocked to see that Mridula has changed her mind about marrying Mano, and runs away from home. When she returns home, they find that she has relapsed and has begun to see Arun all over again.

When a man realizes that the Hindu woman he loves is in love with a Christian man, he decides to sacrifice his love and unite their families so as to make the love story a success.

Gopalakrishnan (Pandiarajan), a clever cook from Coimbatore, moves to an apartment in Chennai. He becomes quickly popular and appreciated among the apartment’s women, however, their husbands get jealous of Gopalakrishnan. Meanwhile, he falls in love with Usha (Kushboo). He decides to marry her with the support of his neighbours. After the marriage, Usha has just learned that Gopalakrishnan was already married. Gopalakrishnan got married with a girl (Sindhu) but she was already pregnant and she eloped with her lover that very evening. Usha is upset and refuses to live with him. Later, Gopalakrishnan finds a forsaken baby (by his ex-wife) in a dustbin and leaves the baby to an orphanage. Gopalakrishnan’s father (Manivannan), an army officer, comes to live with his son and he helps his son to win back Usha’s heart.

Ranganayaki (Vadivukkarasi), a rich women, has three sons : Gopi (Pandu), Madhu (Chinni Jayanth) and Balu (Ramki). Ranganayaki wants absolutely a grandson and she will pass on her whole inheritance to her son who has a male child. The elder sons have only daughters and Balu is still a bachelor.
Balu is a singer in the marriage functions and he falls in love with Swathi (Kushboo), a girl from a middle-class family. He gets married to her and Swathi becomes pregnant. Balu’s best friend, Raja (Vivek), an honest journalist, is married to Shanthi (Anju Aravind) and his wife is also pregnant. Swathi and Shanthi deliver the same day. Balu has a daughter although Raja has a son.
In the meantime, Ranganayaki has a severe heart attack and the doctor says to not reveal shock news. In the hospital, a misunderstanding happens and Balu’s father shows Raja’s son to Ranganayaki in a serious condition. Ranganayaki is immediately recovered. Balu maintains the lie to save his mother’s life. What transpires next forms the rest of the story.

Kamali (Devayani) lives with her sister and brother-in-law in Ooty and is searching for a job. While in Madras, her purse is stolen and she fears she has lost her university certificates. Suriya (Ajith Kumar) who works in Jaipur finds the purse and sends it back to her, and a love develops through letters and phone calls. They agree to love each other without meeting, and Suriya eventually moves to Madras for work. However Kamali’s brother-in-law is pressuring her to marry a suitable man and Suriya’s boss keeps trying to seduce him. Eventually, Kamali and Suriya unite through a run of coincidences.

In a city in Southern India traditional rivalry has always existed between the students of Pachiappas and Loyala Colleges respectively. While Rajesh studies in Pachiappas College, lives in a rented room, with several months of outstanding rent, travels by the bus, hangs out with a number of friends, mostly eve-teasers, and is the Captain of his football team. Arun, on the other hand, comes from a wealthy family, drives his own car, studies in Loyala College, and is also the Captain of his football team. After a football game, both become good friends. Arun tells Rajesh that he is in love with a girl, while Rajesh also tells him that he too has a girlfriend. Both do not know that they love the same girl, Divya. Watch what happens when Divya finds out that both her friends are in love with her, and who she will chose as her husband?

The film starts in a courtroom where a woman Janaki (Meena) is fighting for divorce from her husband Pandian (Kamal Haasan). She offers various reasons for wanting a divorce. She has married Pandian against the wishes of her rich father Vishwanathan Iyer (Gemini Ganesan). But she isn’t able to come to terms with living in Pandian’s small house without amenities. Pandian is an assistant dance director with a modest income and is not able to spend much time with the family. All this accumulates and Janaki decides to apply for divorce, which is granted. The court orders that Pandian can meet his daughter Barathi, once a week and this is his only solace. His daughter, however, loves him a lot and doesn’t like the arrangement. Basha (Nassar), Pandian’s Muslim friend who works in a hotel as a chef, advises him to steal his daughter from Janaki. Pandian goes about trying to do as his friend suggests. In doing so, he is discovered; and now he cannot meet her at all. Then Pandian finds out that Vishwanathan Iyer has advertised for a woman to look after his granddaughter. Joseph (Nagesh) is a makeup man in films. In conversation with him, Pandian gets the idea of playing an old woman, so that he can be with his child and ex-wife without knowing them. Joseph agrees to this plan and the transformation is done from Pandian to “Avvai Shanmugi”– (also Kamal Haasan) a dignified, elderly Iyer woman, who is hired to take care of the little girl.

Ashok’s (Prakash Raj) brothers smuggle drugs and are unstoppable. Only Alexander (Vijayakanth), a CBI officer, can arrest them.

A veteran freedom fighter named Senapathy learns a rare form of martial art that enables him to kill anyone with his bare hands. He uses that to end crime and punishes the culprits on his own.

Romeo lives a wealthy lifestyle in Bangalore, India, along with his widowed mother. He had received considerable assistance and encouragement from Raj Mohan to dance and sing, and as a result gets very popular with young women. He meets and is attracted to Madhu, who is also his fan. His mother meets with Madhu’s grandfather and both arrange their wedding. Then Romeo finds out that Raj Mohan has been stealing body parts, especially kidneys, from patients in the Satya Moorthy Hospital, and then getting them killed via bus accidents. He meets with Raj and warns him that he is going to expose him publicly. Before he could that Romeo is shot, taken by ambulance, and thrown off of a cliff. His friend, Prakash, is blamed for this, is arrested, tried in Court, found guilty, and sentenced to life imprisonment. But Romeo survives, is looked after by tribal people, and several months later returns to Bangalore to expose Raj – only to find a look-alike, a Chandaal (Hindu Undertaker) named Badshah, from Bombay, has taken over his life, identity, love, and is residing in his very own home!