A meth amphetamines cook hunts down the former Police chief of a small town in order to silence him before he can deliver eyewitness testimony against his family, but ultimately finds himself up against more than he had bargained for.

The movie starts with Sugan (Karthi) and his friend Parasuram (Premgi Amaren) being chased by cops. The flashback shows Sugan as a womaniser who has a weakness for Biryani and Parasuram who is his childhood friend. Sugans womaniser attitude always gets him into a fight with his girlfriend Priyanka (Hansika Motwani). Sugan and Parasuram attending a function for branch opening of one of their offices where they meet Varadharajan (Nassar), who is the chief guest for the ceremony. In the meantime, its shown that a CBI officer Riyaz Khan (Sampath Raj) has been deputed to track Vardharajan’s illegal activities. Varadharajan gets impressed with Sugan and decides later to make him his son-in law and this decision gets him into an argument with his other son in law Vijayakrishna (Ramki).

The film starts in the 1980s. A young Shiva (Jiiva) is trained in the ancient Indian martial art Kalarippayattu by his grandfather (Prakash Raj) to be bold and brave and fight against all odds, especially all that’s evil. Shiva grows up with his grandfather’s words as his Bhagavad Gita. However, Shiva’s parents (Udaya Murthy (Jayaprakash) and Lakshmi (Lakshmi Ramakrishnan) want him to lead a peaceful life. Shiva gets arrested by the police after fighting with a law student Guna, who is in Gowri’s (Sentrayan) gang. Enters Priya (Shriya Saran), also a law student. She is the daughter of a police official (Babu Antony). She bails Shiva out and falls for him after seeing him fight for other people’s good. Eventually, Shiva too falls for her.

The story is set in a rural area around Madurai, in the village called Paruthiyur, which still practices caste segregation as a result of the controversial Criminal Tribes Act imposed by the British colonists, where members of impoverished communities are stereotyped as generational criminals.
Paruthiveeran (Karthi) is a country brash whose inter-caste parents were ostracized by the villagers since his higher caste father married his lower caste mother. After his parents’ death, Paruthiveeran was mostly raised by his doting paternal uncle Chevvaazhai (Saravanan) who pampers and accompanies him in every misbehavior to keep him happy. Having grown up among his mother’s people, he is often arrested for petty crimes. His one ambition in life is to gain enough notoriety to be on TV news and to be thrown into Madras Jail. He often bullies Paruthiyur villagers for money and fun.

When a band of brutal gangsters led by a crooked property developer make a play to take over a local school, Master Ip is forced to take a stand.

Parthasarathy (Karan) is the son of a cook and a political science graduate. He aspires to become a Minister. His mimicry skills get him acquainted with the Chief Minister, who comes to his village for a meeting. He impresses him to become local leader of the party. This incurs him the wrath of Thamizh Sakthi (Nasser), a leader of the same party, who wants to promote his younger brother.
Turn of events lead to Thamizh Sakthi helping Parthasarathy become MLA with a promise that he should be with him and support him in all shady deals. As it happens Parthasarathy now becomes a Minister. Their corrupt ways earn them money.

A group of archaeologists become trapped in the past when they go there to retrieve a friend. The group must survive in 14th-century France before they can escape back to the twenty-first century.

Sachein (Vijay), a carefree and happy going guy joins a college in Ooty and falls for Shalini (Genelia) immediately on seeing her in first sight. Shalini studies in the same college as Sachein and is considered a popular and beautiful student, while also being a short tempered and arrogant girl with an upper-middle class status. Sachein comes to know all of this information about her from Arnold aka Ayyasamy (Vadivelu), who is a guy that studies in the college for about nine years and keeps studying there because he thinks that students should give their respect to their college professors, while also informing Sachein, that there are so many boys trying to impress her. This makes Sachein take a different route and he starts mocking Shalini in front of her, which irritates her. Slowly, they both become good friends, after Sachein saved her father in a bike accident. Santhanam (N. Santhanam), who is another student in the college also loves Shalini. But, he feels jealous seeing her and Sachein being good friends and decides to separate them. Santhanam writes in one of the walls of the college, that Sachein loves Shalini and this angers Shalini, as she misunderstands that only Sachein has done it. Shalini shouts at Sachein, but Sachein informs Shalini, that he is so outspoken and does not want to write in the college wall to convey his love, which makes Shalini realize her mistake.
But to her surprise, Sachein informs that, although he has not written it, but the content present on the wall is true which means that he is in love with Shalini. This again angers Shalini and she shouts at him that she considered him only as a good friend and that she wasn’t in love with him. Later, Shalini overhears Sachein challenging Santhanam that Shalini will convey her love within the next thirty days, as their college years will be completed by then. Shalini challenges Sachein that she will never fall in love with him.
Manju (Bipasha Basu) is also from the same college and she likes Sachein. Shalini gets jealous when she spots Sachein and Manju together often. But Manju informs Shalini that Sachein loves Shalini so much and asks her not to hide her feelings, as it is very evident that Shalini too likes Sachein. This makes Shalini realize her love towards Sachein. Sachein comes to know that Shalini’s parents have arranged a wedding for her and he meets Shalini on the last day of their college and says that he has lost the challenge and he will be leaving Ooty tomorrow. But Shalini hides her feelings towards Sachein and she plans to propose her love the next day as she wants to win the challenge by not conveying her love within the 30 days.
On the 31st day, Shalini is excited and goes to propose Sachein. But suddenly, she meets Gowtham (Raghuvaran) on the way, who is Sachein’s father. Gowtham is a billionaire, in which this fact makes the entire college be surprised that Sachein is the only son of a rich business tycoon, as Sachein always stays very simple and down to earth. Now Shalini feels bad, that if she proposes her love towards Sachein at this moment, then he might misunderstand that she decided to marry him after knowing that he is so rich and decides to stay calm. Sachein leaves to the Coimbatore International Airport in Coimbatore and Shalini also follows him. In the airport, Shalini could not control her emotions and proposes to Sachein. She also revealed that it is her ego that didn’t let her convey her love during the last thirty days. Sachein feels so happy and the couple are united.

An alcoholic professor is sent to a juvenile school, where he clashes with a gangster, who uses the children of the school for criminal activities.

After Kwon, an exceptional gamer, is wrongly framed for murder, he along with his allies decides to find the real culprit and prove his innocence.

Thiru is the owner of a drug-dealing business that runs in both national and international markets. However, he faces challenges when his mother learns about it.

Two villages on either side of a river are always feuding as the headmen Veerasamy (Vinu Chakravarthy) and Sethupathy (FEFSI Vijayan) have personal enmity. Due to some misunderstanding, Sethupathy’s children die, and the blame falls on Veerasamy. Sethupathy seeks revenge and tries to kill Veerasamy’s son but is saved by his servant’s son, but the boy disappears.
20 years later, Shiva (Arjun) is seen arriving in Kumbakonam, living with a bakery owner Veerabagu (Vadivelu). Shiva’s mission is to protect Devayani and her son from all sorts of gangsters. Priya (Reema Sen) walks into the bakery. Though she dislikes and torments Veerabhagu, she falls for Shiva. Sooner, Shiva’s true identity is revealed as he saves Devayani and her son from being murdered by Sethupathy’s son.