The film opens with Shiva going to college for an exam, where his pen runs out of ink. He receives a new one from the girl next to him, Sindhya. He immediately falls for her and starts following her. He attends an educational tour with Sindhya, Vasanth, and Priya (Vasanth’s lover). Eventually, Sindhya falls for Shiva too. He then finds out that she got the top rank in the test and a scholarship to the US. Before she leaves, Sindhya invites Shiva to breakfast at her house while her family is out. At her house, Shiva strips her and the two end up having sex. Sindhya then goes to the US. She comes back three months later, saying that she has some private information to tell him. When she gets back, she announces to Shiva that she is pregnant, thinking that no one else is in the house. However, Shiva’s mom and dad overhear and they scold the two for having sex.
The film skips ahead a few years to show Shiva and Sindhya, husband and wife, having a child. Sindhya is working while Shiva is an unemployed husband, looking after the child at home. Sindhya’s brother Randy, a psychiatrist, tries to help by setting up a trick for Shiva to discover his interests. He sets up a plot in which Shiva overhears Sindhya talking to a person named Mahesh who is really Randy, making Shiva think that the child is not his, but someone else’s. Sindhya and Randy want Shiva to overhear them talking. Shiva gets suspicious about who Mahesh is and starts getting data from the library, helped by Vasanth. The climax is in the people he meets and he finally figures who it is. He accuses Sindhya and tries to kill the child. His family and Randy then explain what happened. He then rewrites the test and passes. The movie ends with Shiva getting a job and Randy still on his case on whether he is back to normal.

“National” Selvam is a small-time photographer who lives with his father “National” Shanmugham. They run a digital photography studio in their small town. Next to the studio is a flex-board printing shop owned by Selvam’s friend Sadha. His assistant Vigadakavi is a photoshop wizard who designs the flex-boards. Selvam is in a relationship with Shenbaghavalli, his high school sweetheart.

A youngster in his mid-30s goes through a series of struggles after coming to terms with the fact that he was in coma for 16 years.

The young heir of a rich family sets out to effect a reconciliation between estranged family members.

A young agriculturist Velu (Kamal Hassan) goes to extremes to attain revenge against his devious landlord and her family. He is an upright young man, but when his family gets cheated out of money, he decides it’s time to take a stand. Donning various disguises, he-with help from his sister Valli (Thulasi)-sets out seeking justice against the landlord and her confrontational daughter Geetha (Ambika) and son Pazhani (Raveendran).

A couple of people fighting amongst themselves to find a long lost treasure.

A rowdy on the run is mistakenly jailed by a cop after a pub brawl.

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.

Gautham (Bharath), a college dropout and good-for-nothing guy, falls in love with Narmada (Genelia D’Souza), the daughter of a local don Sakthivel (Radha Ravi). She lives in a hostel after learning that her father is a criminal who now wants her to marry his partner Sardar’s (Brahmaji) brother. So the two lovers elope to Mumbai, and they are soon tracked and separated. Finally, Gautham, along with his friends, fights against all odds to win back Narmada.

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.

Viswa (Dinesh) is a good for nothing guy who lives in a police colony and is son of an honest constable (Rajesh). It follows the conflict between a disciplinarian father and his wayward son. One day the constable dies in line of duty and the son gets his father’s job. The rest of the story is how Viswa becomes from a reluctant cop to a disciplined guy, who takes revenge against those who murdered his father.

Daveeth arrested for killing two of his friends. Arguments going on in the court, daveeth says “I’m not the killers, they are the Killers, a true story behind me, if u know the story, you can find that what is truth.