Nandha (Nandha Durairaj) is an upright sub-inspector of police who has been transferred 15 times in three years. He is then transferred in a police station based in Pollachi. There, Police Inspector Pandian (Natarajan Subramaniam) is in the pay of Minister Periyannan (Rajagopalan), who runs in own government in the place. Nandha is shocked to note that Pandian and the entire police department are corrupt. Thereafter, Nandha tries hard to enforce the order. Soon, both policemen clash. Pandian becomes an honest policeman after Periyannan’s men attempt to kill him, and he is revived with blood transfusions from the public. However, Nandha does not believe that he has truly changed. After a fellow honest sub-inspector gets killed by Periyannan’s men, Nandha blames Pandian, and through short routes, becomes inspector himself. He arranges for Periyannan and his men to clash with Pandian, but in the ensuing fight, Pandian kills them all, while Nandha walks away.

Vicky (Prabhas), an expert in gaming software, lives in Australia and never compromises in his life, a principle he adheres to since his childhood. He believes that one should be oneself in a relationship and one shouldn’t change one’s orientation for the sake of the partner. He also encourages his friends to follow his principle of life. But Vicky’s principles and attitude leads to a clash of interestswith his father (Nassar), who constantly advises him to adjust his character for his and other’s happiness but to no avail.Meanwhile in India, Vicky’s parentsarrange a wedding alliancebetweenhim and Priya (Kajal Aggarwal), Vicky’s childhood friend who is a doctor by profession. She and Vicky are poles apart; while Vicky is modern in his thinking and is not ready to compromise with his life, Priya is traditional and conservativeand is ready to compromise for thehappiness of others. Initially, Vicky and Priya do not get along well, andboth play practical jokes on one another. But later, on her father’s (Murali Mohan) advice, Priya attempts to change her attitude towards Vicky. Soon Priya falls in love with Vicky and changes in many ways for him, such as giving up her love ofclassical danceas Vicky does not like it, eating non-vegetarian food and wearing modern dresses. Vicky too begins to fall in love with her and is ready to accept the wedding proposal until he finds out that Priya has compromised on her interests for his sake. He rejects the wedding proposal and returns to Australia.Back in Australia, Vicky is matched up through aCadburysurvey with Maggie (Taapsee), a free-spirited modern girl who shares his no-compromise attitude. Both of them meet at a mall and interestedin each other, begin to date and soon decide to get married. However, Maggie’s father is none other than the MindGames head’s brother, who is unwilling to let Vicky marry Maggie. After much persuasion from Vicky, Maggie’s father agrees to let Vicky marry Maggie on the condition that he should stay in his house for 4 days for Maggie’s sister’s wedding and if Vicky manages to win over at least 2 relatives of Maggie, he can marry her and he would get a business in India else he should forget Maggie and leave the contract. But Vicky changes the condition that if at least 1 relative of Maggie does not get convinced that Vicky is the correct match for Maggie then he would forget Maggie and leave the contract, else he would marry Maggie and does not leave the contract.Soon, the relatives begin pouring infrom India and among them, to Vicky’s shock, is Priya, who happens to be the groom’s cousin. During the 4 days, with the help of Priya, he manages to win over the entire family. It is clear that Vicky is going to win Maggie’s father’s challenge. Priya leaves for India on the night before Vicky wins the challenge, heartbroken at the thought that Vicky is marrying someone else. Vicky receives a message Priya had recorded prior to him rejecting heron his mobile phone where she haddeclared her love for him. He gainsa change of heart on seeing this message and realises how much Priya had loved him and was willingto change for him, in spite of his faults. He also realises the need forcompromises in life. Vicky conveys his feelings to all the wedding guests present and decides not to marry Maggie. Maggie understands his feelings and accepts his decision.Vicky returns to India to win back Priya. After initially playing hard-to-get, Priya accepts Vicky’s love and they live happily ever after

A brave men and a group of 5 NCC girls were onto a trekking in a forest. At the same time, a terrorist group plans to destroy a innovative rocket launch from that forest.

Velu (R. Sarathkumar) is living happily with his sister and friend Pazhani (Vadivelu) in Palani. He stays away from all wanted troubles and is forced to resort to fighting to defend his sister from the local rowdy Raghavan (Vincent Asokan). A flashback follows where it is revealed that Velu is a military officer and his sister is actually the sister of his best friend, Police Officer Murugan (Kalabhavan Mani) of Chennai. It is also revealed that Velu had maintained a low profile to protect his sister from his foe Naachiyar (Kota Srinivasa Rao) whom he had left crippled before he went into hiding.

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.

Kaathadi is directed by Kalyan, who got rave reviews and critical acclaim for his recent offering Kadha Solla Porom. It’s an action comedy about the kidnapping of a child and how police officer saves the kid forms the story.

Son-in-law makes an attempt to change his mother-in-law’s character to make her to feel that his love is towards her daughter not on her property.

The film begins with Professor Tiwari (Pankaj Kapur) being interviewed about police encounters and bids to eradicate organised crime from Lucknow and its surrounding areas. It then showcases Ajay Kumar (Arshad Warsi). Since he was young, Ajay has been traumatised by the death of his army officer father, who killed himself when accused of being a deserter, leaving his widow Prabha (Suhasini Mulay) to bring up Ajay on her own. Ajay studies hard and successfully becomes an Indian Police Service officer with the title of Senior Superintendent of Police of Lucknow. Due to his honesty, he gets transferred to various states in India, around 14 times in eight years. At his new posting in Uttar Pradesh, he comes to terms with a new criminal boss and ruthless killer, Gajraj Singh (Sushant Singh). Ajay engineers the setting up of a Special Task Force to deal with Gajraj. However, he also runs into problems as Gajraj is politically well-connected. Gajraj continues to elude the Task Force, using more modern technology such as the use of cell phones. But the Task Force recovers and is able to monitor Gajraj’s cell phones with the help of Prof. Tiwari. They find out that Gajraj is planning to contest the elections and if he wins, no police officer of any rank, even the Task Force, would then dare to arrest him or even consider him a suspect, which may well result in the Task Force being mere paper tigers. They have a final confrontation inside a train which leaves from Hazrat Nizamuddin railway station. All the officers in the Task Force as well as members of Gajraj’s gang kill each other in the fight, leaving Prof. Tiwari as the only witness.

Rowdhiran, an honest and brawny police officer hold a vendetta against a group of criminals. When the crime kingpin Badri hatches a plan to eliminate him, Rowdhiran decides to fight back.

It’s love at first sight for Seenu ( Vishwa) when he comes across Mithra (Tanvi) en route to his college. Seenu is delighted when he learns that they are classmates and even manages to win Mitra’s friendship. But fate intervenes in the form of Mitra’s childhood buddy Sam ( Irfan).

Gajendra (Vijayakanth), an orphan, is adopted and grows up under Azhagarsamy’s (Sarath Babu) family care. Azhagarsamy considers Gajendra like his own son. Kasthuri (Flora), Azhagarsamy’s granddaughter, falls in love with Gajendra. Gajendra takes of a mentally ill girl Indhu (Laya). The rest of the story is about why he took care of her.

Chandru (Arya) and Bigilu (Lal) are close friends. Chandru is an expert auto driver and racer, while Bigilu is a mechanic expert at customizing autos to run at the dream speed of 130 km/h. Pichchai aka Son of Gun (John Vijay) is the chief of a rival group who wants to outsmart the duo. Chandru, the race champ, tries to settle the dues for his auto through a race, which is almost a cakewalk for him. He and Bigilu challenge Son of Gun to a race, and a date is fixed. Bigilu, meanwhile, introduces Chandru to his sister, who runs a biriyani shop. Chandru is attracted to her daughter Rani (Pooja), and woos her. The affair grows stronger, and the two end up having sex. However, Chandru is not interested in long-term commitment and tells Rani, who curses him and moves away. On the D-day, Chandru is distracted by the memories of his love affair and loses the race and his auto. Later, Bigilu comes to know about the affair. The subplot of a smuggler’s search for missing pearls adds flavour to the proceedings. The unpredictable and fun-filled climax puts everything in order.