An undercover cop has to stop the mastermind behind a child kidnapping racket, which will also lead to the redemption of his Azheimer's-affected father, a former policeman.

A former anti-terrorism officer teams up with a hacker and his girlfriend to execute a string of strategic attacks. As the authorities race to stop them, their true motive slowly unravels—a dangerous mission to uncover a high-level conspiracy involving government corruption and betrayal.

The story focuses on five friends at the Madras Institute of Technology, who want to remain friends and hope to join the same company after graduation. During a vacation, one of the friends, Ilango, goes home, where he is forced to get married to his rustic cousin, While their dream to work together becomes true, Ilango alone gets a transfer to Bombay. The friends force Elango to visit his wife before leaving for Bombay and put him on a train. But Elango manages to get off the train and from there loses touch with his friends and family in the village. The friends part and six years later, two of the five come back to join the two girls in Chennai. On the train in the journey back, Prabhu, one of the friends, and Ilango's wife Eashwari meet each other. Prabhu falls in love with Eashwari without realizing who she is.

A college student files a police complaint against the adopted son of a gangster for shooting his girlfriend. However, the gangster is shocked to learn that the student is his real son.

Shruthi, an enterprising 20-year-old girl, partners with Sakthi, a happy-go-lucky youngster to set up her dream business — wedding planning. They decide to not mix finance and romance but a night's revelry changes their equation and they part ways. Will they be able to admit their actual feelings?

Vasu is a prankster who whiles away his time teasing girls and getting scolded by his father. But when one of his pranks results in his brother getting jailed, he decides to turn over a new leaf.

Saravana and Krishna are close buddies in college. Saravana sees a video tape of Krishna's sister Sadhana studying in London and falls in love with her. So to meet her, Saravana goes with Krishna to a village near Tirunelveli where he finds that there is a bloody war going on between two warring caste groups. Krishna's brother Soundarapandi his wife and Krishna are killed by the rival group of Dorai Singam. However Saravana saves Sadhana and takes her to Chennai. Initially Sadhana is not accepted by Saravana's large family but slowly when they come to know about her background they support and love her. The rest of the film is how Saravana tries to help Sadhana to go back to London, and in the process eliminates the entire gang of Dorai Singam single-handedly.

Against the wishes of his foster parents, Aathi goes to college in Chennai. He is actually looking to avenge the murder of his biological parents. He meets and falls for Anjali, who has an agenda as well.

Thirumalai, a mechanic, falls in love with Sweta, but her businessman father opposes the union and sends a gangster to break up the romance. Will their love prevail?

Senthil, an advertising executive, decides to invite his old friends to his wedding. His past is unraveled as he sets out on a journey to meet his old friends and lovers.