Pandi is a sincere and dedicated worker who will not get angry, stressed out or nervous even when he is provoked by others. The film follows the story of this honest man as he commits in everything that he does.

Rajan Vasudev (Kalabhavan Mani) is an intolerable business tycoon who runs the great OPM Group of companies spread across the globe. He meaninglessly topples companies by either buying or taking the majority shares so that his company can spread across. His wife was killed 20 years ago by a rival company owner, which turned him into this way. Udhay Vasudev (Vinay Rai) is his only son, a spoilt kid who drives a Ferrari, spends lakhs everyday, and lives in one of the most sophisticated houses in Chennai. He is the sponsor for his constant companion Madhan (Yuva), who lives with him and local friend Kadukku (N. Santhanam) along with 12 bodyguards (headed by Alse Ram). Udhay meets LR Easwari (Kajal Aggarwal), a music student in Chennai in an accident and falls head on for her. He wants to mingle with her and blackmails her by saying that she has damaged his car and could work by his will to compensate the 10 lakh she owes him, and in a funny turn of events, he makes her his maid-servant. Soon, Madhan falls in love with Easwari, who has also fallen for Udhay.

An ex-policeman is hired as a bodyguard for a girl child after a series of kidnappings in the city. However, he is in for a rude shock when the girl gets kidnapped and killed.

Jani, a slum boy, loves Sandhya but doesn’t express his love because she sees him as her friend. Jani selects a groom photo as per Sandhya’s request, but when he learns a shocking truth about the groom, he tries to break up the marriage and earns a bad name.

Chulbul Pandey encounters an enemy from his past, and his origin story as the fearless cop unfolds.

Nandu and Vijay are brothers, who were abused by their stepmother during their younger days. Nandhu, who is mentally ill, decides to kill Vijay’s fiancee as he visualizes her as his stepmother.

A teenage student who fails to live up to the expectations of his father seeks helps from anti-social people to pursue his education further.

Bio-scientist Govindarajan Ramaswamy speaks at the Jawaharlal Nehru Stadium about chaos theory and the butterfly effect. He begins by reciting events from the 12th century in Chidambaram, when King Kulothunga Chola II, a Saivite, persecutes Vaishnavites and intends to destroy an idol of Govindaraja. Rangarajan Nambi, a Vaishnavite, protects it and offends the king, who orders Rangarajan to be executed by being pierced, stoned, submerged into the sea with the idol, before being devoured by the shark, thus the king succeeding.
On 20 December 2004, a nano bio-technology lab in the United States designs a vector-virus intended as a bio-weapon. When they were watching the insound of his lab monkey breaking out of his cage and retrieving a sample of the test virus. The monkey, who thinks the vial as the usual chocolate Govind would feed him, swallows the sample of the virus. Govind and his co-workers watch helplessly as monkey dies. Govind, saddened by the event, quarantines the lab room by filling it with concentrated salt solution, the only antidote to the virus. After understanding the original virus’s lethal potential the hard way, Govind refuses to hand over the main single vial containing the virus, due to fear of misuse. However, his boss, Dr. Sethu, has a malicious plan in mind, and tries to sell it to a terrorist group. Govind tries to sneak the vial out of the lab in order to save the vial from Sethu’s evil plan, but is pursued by the security guard and the police. Govind flees to his friend and coworker Suresh’s house for refuge, who secretly betrays him.

Govindan (Manivannan) is a thief who has two children. Aadhi (Pasupathy) and Mathi (‘Chiyaan’ Vikram). Years go by and the two, Aadhi and Madhi, decide to stop stealing and mend their ways and lead a hardworking life along with their father. They migrate to neighboring village and meet a retired agricultural officer, Chidambaram (Vijaya Kumar) who is in deep debts and is under pressure from the village’s landlord, Kalingarayar (Murali) to clear his debts. In efforts to help Chidambaran, Mathi confronts Seetha Lakshmi (Asin), Kalingarayar’s daughter, who comes to collect the money Chidambaram owes her father. Seetha Lakshmi starts to acquire a liking for Mathi but keeps it hidden due to her father’s atrocious temper. In an attempt to teach Kalingarayar a lesson, Mathi forcibly ties the mangalsutram around Seetha’s neck. Kalingarayar, realizing his daughter’s love for Mathi, comes down to arrange a grand re-marriage between the two. But things go awry when Manicka Vel (Biju Menon), Seetha Lakshmi’s maternal uncle comes to town in an effort to stop the wedding between the two as he has plans of marrying her and wiping her family fortune.

The story begins in Goa, where 6 dead bodies are washed ashore. The Goa drug lord Jothi (Ashutosh Rana) is responsible for this. The Police Department of India is unable to capture him for nearly a decade because not a single person has seen him in person as he is constantly on the move and has no permanent aides or accomplices.
Chitti (Mahadevan) is in charge for the drug trafficking in and around Goa. One day, he receives a call from Jothi about a missing drug consignment. Chitti and his men are unable to hunt down the culprit. It is revealed that Shiva (Arya) is the mastermind behind the drug theft and is working for Chitti as his most trusted henchman. Chitti, along with Shiva and his nephew Guru (Harish Uthaman), run an underworld drug empire in Goa.

Haunted by his past, Prithvi remains a poor performer at the workplace. He begins to move on with the help of his girlfriend. But, all hell breaks loose, when she is kidnapped by mysterious bikers.

Jealous of his mother’s attention toward his brother, Sathya befriends Mandhiramoorthy, a political gang leader whose brother hates Sathya. Meanwhile, a policeman plans to take down the gang.