Jai and Neha, eloping to Hyderabad to get married, offer lift to a stranger on the highway not realizing that he is a murderous psychopath.

The plot of the film explores the reasoning behind an alleged feud between the people of two districts in Tamil Nadu. The film aims at portraying the aggressive behaviour of certain miscreants, that leads to the death of a woman.

An underground terror group led by a mysterious proxy Akash recruits unemployed youth and turns them into suicide bombers. Asst. Commissioner of Police Parashuram (Arjun) decides to take the case (and the film) into his own hands in a fit of patriotic fervour. In a subsequent fit of wisdom, he hides a key witness (gayathri raghuram ) at the home of his flaky fiancée (Kiran), thereby endangering both and his anti-terror mission in general.

Krishnasamy (Arjun Sarja), a respected man, and Samiyappan (Thilakan) are in a feud for several years. Amudha (Nikitha), Krishnasamy’s daughter, hates her father because she thinks that he is a killer.
A few years before, Krishnasamy was a tea master with his friend Kandhasamy (Goundamani). After his father’s death, Krishnasamy had a lot of responsibility. He fell in love with Sindhamani (Roja). In the meantime, Samiyappan, a local don, cancelled his engagement because Sindhamani’s father promised Sindhamani to his son (Raja). One day, Krishnasamy ridiculed Samiyappan in a politic function. This humiliation irks Samiyappan, so his henchmen burnt Krishnasamy’s house and Krishnasamy’s brother who was in the house died. In anger, Krishnasamy entered Samiyappan’s house and fought against his henchmen but an honest police officer (Nagesh) arrested him before he committed murder. The police officer gave him a mission: stopping Samiyappan’s illegal activities.

Kartik, raised in the slums by his brother, is an engineering student. His father Jothi, who abandoned his family years ago, takes advantage of Kartik’s friend, Vishnu, for a drug peddling assignment.

In the war-ravaged Kenyan countryside, a U.S. soldier (Lee Pace) and a French foreign aid worker (Berenice Marlohe) team up to survive an alien onslaught.

Kameshwaran is a talented ad film director who works in a company owned by Vanangamudi, in which Kamu’s cousin Rameshwaran is the CEO. Despite being more talented and skillful than Ramu, Kamu does not become the CEO because of a small mistake he did the past. He rues over this issue and blames Lord Brahmma for making his life not as he wished for. Kamu is in love with Manisha, an advertisement model, and she too reciprocates his feelings.

A climber trapped on the face of a mountain fights off four killers stood on an overhanging ledge twenty feet above her.

In times of the infamous Argentinian Corralito, the neighbors of a little town trace a plan to recover the money they lost after learning that their bank manager and a corrupt lawyer have stolen it.

A mysterious mastermind and his team forms a plan and commits bank heists across Chennai, but their motive of the heists remains mysterious.

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.

Bairavaa (Kala Bhairava in Telugu version) (Vijay), a collection agent for ICCI Bank in Chennai (Vijayawada in Telugu version), is a righteous person who is willing to employ even violent means to get back the money from the debtors. During his manager’s daughter’s wedding, he comes across Malarvizhi (Keerthy Suresh), a medical student from Kallidaikurichi in Tirunelveli district (Vishakhapatnam in Telugu version), and immediately falls in love with her. Malar goes to the Koyambedu bus station to leave Chennai, where Bairavaa comes to propose his love, when he notices she is cornered by a group of thugs with intent to kill her, as she was allegedly involved in an attack on a union minister’s son Charan (Roshan Basheer). However, they retreat after receiving a call from Periyakannu alias PK (Jagapathi Babu) from Tirunelveli, who tells them not to harm her.