Rishi, a millionaire businessman, returns to his homeland, where he becomes the champion of poor and downtrodden farmers.

A criminal and his friend find themselves in possession of proof that can put a renowned politician behind bars. When they learn that the cops might be involved, they must decide whom to trust.

Set in the year 1987, the movie depicts the life of Krishnakumar alias Kittu (Vishnu), a Dalit youth whose main ambition is to become a collector. He is influenced by the ideas of Chinnarasu (R. Parthiepan), a local Dalit leader who had also sponsored his education. Chinnarasu and Kittu try to fight against the rampant caste discrimination meted out to them by the upper caste people, but are unable to do much about it as the police and courts are biased towards the upper castes. One day, Kittu sees his classmate Gomathi (Sri Divya), who is from the upper caste, discriminate against a Dalit girl. He admonishes her publicly for her act of caste discrimination, which makes her repent her behaviour. Gomathi eventually falls in love with Kittu, but Kittu maintains a distance as they are from different castes, though he too is in love with her.

A guy who gets a face transplant done, following a fire accident, realises many are after his life. He sets out to find the reason for the same.

Muralipandian (Vikram Prabhu) is the only son of Chellapandian (Sathyaraj), a disabled policeman who is now working in the State Crime Records Bureau and expresses a desire to see his son in the police one day. However, Murali is against becoming a policeman due to an incident which happened in his childhood; when Chellapa lost his leg during police duty, his wife fell down the stairs on hearing the news, leading to her death and left a crippled Chellapa to single-handedly look after the young Murali. His ambition is to become a bank manager, and he manages to get an interview for the same in a bank. While on a pilgrimage, Murali meets Ambujam (Monal Gajjar), a young doctor who is travelling with her chaperone, who is her grandmother Aishwarya (Kovai Sarala). Ambujam initially thinks ill of Murali due to unsavoury incidents which occur between them during the journey, but after she finds out about Murali’s true character and he helps her Aishwarya recover from dehydration, she falls in love with him. She expresses a distaste for marrying policemen, which impresses Murali.

ACP Krishna is on a mission to find the whereabouts of an accused criminal. During this process, he meets Sailaja, the daughter of the accused who is missing and love blossoms. However, when Sailaja finds out that Krishna is on a mission to arrest her father, the two break-up and move apart. How Krishna stays determined to perform his duty and also wins back the love of his life forms the rest of the story.

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.

The bodyguard Michael Bryce continues his friendship with assassin Darius Kincaid as they try to save Darius’ wife Sonia.

A budding director tries to research a merciless gangster for making a film on gangsterism. But his secret attempts to conduct the research fail when he gets caught for snooping.

The film begins with Gaythri (Sneha) getting married to an irrigation engineer (Vikramaditya) against her wishes. As she conducts her marriage with mechanical unconsciousness, her sunken heart reflects her past. Gayathri, a marine student, goes to Rameswaram to study coral reefs and marine ecosystems while staying with her uncle (Vinu Chakravarthy) in a fisherman hamlet. She witnesses Chinna (Arjun) and his assistants (Mansoor Ali Khan and Ponnambalam) – local mobsters working for a gang – committing pitiless and violent crimes. Though she wanted to report these crimes to the local SP (Vijayakumar), her uncle dissuades her. Meanwhile, she asks her uncle for a guide to take her to locations rich in marine life. Her uncle directs Chinna to help Gayathri in her pursuit. After a couple of close encounters with Chinna, Gayathri understands his soft nature and vows to reform him as a socially acceptable man. Later, love blossoms between them. Even as Chinna tries to make his life straight, a violent feud ensues between him and the local gang. Trying to save Gayathri, Chinna kills the gang leader and is sentenced to life imprisonment. Taking advantage of Chinna’s absence, Gayathri’s parents marry her to the irrigation engineer. As the story ploughs through in the second half, Chinna, characterized by the obsession with “Gayathri”, kills people working against his goal to attain his ladylove. At the end, after much drama, when Chinna almost killed Gayathri’s husband, she shot him in order to save her husband. Chinna asked her if she had feelings for him before this, at least for a second. Just after she shook her head saying yes, he jumped off the building. The movie ends there indicating his death.

As a child, Paari (Atharvaa) lost his father who tried to stop the war between his native and neighboring village as they fought over sharing a pond water. Years later, Paari is a young man who returns from Singapore but the battle between two villages is still on. Mean while, Paari is in love with Thamarai (Anandhi), daughter of rich village man (Lal) who also owns the pond and is adamant not to supply water to the nearby village.

A deputy superintendent of police (DSP) and his two subordinates are on a mission to hunt down a psychotic serial killer, whose murder patterns and method are always so flawless and ironclad. The investigation leads the trio down the dark paths of the case, where they discover a haunting secret.