The plot revolves round the life of Karthik (Dhanush) a struggling freelance photographer in Chennai who does portfolios, weddings and other functions. Karthik has a keen interest in wild life photography and friends call him a genius, though he is bit of a loner. His role model is Madhesh Krishnaswamy (Ravi Prakash), a world renowned wildlife photographer and his dream is to be an assistant to this arrogant man. Karthik hangs out with his friends and is extremely close to Sundar (Sundar) who introduces his girlfriend Yamini (Richa) to the gang. Initially Karthik and Yamini cant stand each other but there lies the twist, when opposites attract. Written by Captain

Prabhu is a young man whose life significantly improves after buying a bike, as he gets a decent job and gets closer to his crush Hema. Things take a deadly turn after his bike gets stolen, prompting Prabhu to relentlessly search for it with the help of his friends. This hunt eventually pits him against the underworld as he learns his bike was used to transport drugs. Prabhu must prepare for the worst and protect his family from an egoistical gangster, while continuing the search for his beloved bike.

He makes several bids to obtain employment but all goes in vain due to his poor language skills and inadequate educational qualifications. All his friends settle in life, but he continues to struggle in finding employment. Vasu has two faithful friends in Cheenu (Karthik Kumar), and Ganesh (Karunaas). His father (Raghuvaran), who is a teacher, is always critical of him for being an irresponsible person. This just added to his list of woes. At this juncture, Vasu catches a glimpse of a woman named Keerthi (Nayanthara), and immediately falls in love with her. He learns that she works for a software solutions firm. Luckily for him, Vasu finally secures employment in the same firm. Keerthi eventually turns out to be a short-tempered young woman. On a business trip, Vasu accompanies her along with two other colleagues (Jeeva and Manobala), to Australia. Here he reveals his feelings of love to her. She immediately turns him down, saying that she comes from an orthodox family, and her marriage has already been arranged with her uncle's son. A depressed Vasu returns to India thereafter. Unable to see his son in depression, his father decides to meet Keerti. She abuses him for recommending his son's love, and accidentally slaps both Vasu and his father. Later that night, Vasu's father dies of a heart attack. In order to help change Vasu's mood, Cheenu manages to persuade him to come along to his family house in the country. Coincidentally, on the train journey, Keerthi is revealed to be the fiancee of Cheenu. However, their grandfather's (K. Viswanath) thoughts of getting them married earlier are put aside because Cheenu and Keerthi leave the house to have their own identity. This causes heartburn to their grandfather. With the passing of a few days, the parents of Keerthi and Cheenu decide to get them married to appease their grandfather. After several turns of events, Keerthi realizes that she is in love with Vasu instead. When Vasu asks her to forget him, during a midnight meeting, because he believes that it would create problems in their happy family, Cheenu himself overhears their conversation. During the wedding, Cheenu tries to force Vasu and Keerthi to confess their relationship to everyone who is present. But when they hesitate to do so, Cheenu stops the marriage himself, by lying to his elders that he has a secret wife in Chennai. When Cheenu comes under fire from his relatives, Vasu tells them the truth, and is driven out of the house. He is joined only by the grandma of the house, who agrees to accompany him as she reminds Vasu of his late father. In time, the rest of Cheenu and Keerthi's family comes to stay with Vasu for a few days. But Cheenu's grandfather refuses to enter the house, telling Vasu he is still angry with him, and needs time to change himself somehow. The movie ends when Vasu and Keerthi became a happy couple and live together happily. Written by Ashik ph

Kathir (Ravi Krishna) is a young underachiever, frequently venting his frustrations through public outbursts. When a north Indian girl Anitha (Sonia Agarwal) moves into his neighborhood, he falls head over heels in love with her, and aggressively expresses interest. When she does not respond favorably, things get out of hand. Written by Joyojeet Pal

Maryan (Dhanush) is an aggressive fisherman who is slowly attracted to the feisty Panimalar (Parvathy) who is crazy about him. But Theekkurissi (Vinayakan) a local moneylender sets his eye on the beautiful Pani and wants to marry her in return to the huge loan that her father (Salimkumar) had taken. To get Pani, Maryan decides to go and work in Sudan, Africa as a construction worker under a contract of two years. But on the day of his return, he along with co-workers is abducted and held ransom by Africans to get money from the company they work for. Does Maryan escape from the hot deserts where he is tortured? forms the rest of the story. Written by Surya Kumar

Rearing roosters, maintaining them and using them for fights are a way of life and a matter of honor and lifeline to many people. In such a tenement, Pettaikaaran (Jayabalan) leads a very respectable life with his key aides Durai (Kishore) and Karuppu (Dhanush) along with others. His main adversary in hen fights is Rathinam, the police inspector. Pettaikaarar is known to have an impeccable track record of successes when it comes to fowl fights especially with Rathinam's. In an unexpected situation, Pettaikaaran challenges Rathinam to a fowl contest which witnesses Karuppu violating his mentor Pettaikaarar's word but emerging successfully with enviable proceeds. This results in the swelling of his status among his folks which plants the seeds of animosity in the minds of Pettaikaaran. What follows is an interesting and unexpected path with twists and turns highlighting on the way the multiple layers of human emotions with sense playing truant. Written by Subramanian

A slum dweller, Kokki Kumar (Dhanush) returns from a movie to find his mother murdered by his own father. As his father deranged advances towards him he runs away and starts begging on the streets until he is arrested on false charges. Prison exposes him to a whole new culture and a set of people who train him in a life of crime and violence, until Kumar becomes a consummate gangster. Delving further into the dark world, he murders many to become a powerful mob kingpin and joins hands with crooked politicians in his thirst for more power. As he continues to earn enemies everywhere, Kumar's life is threatened from all directions. Can he survive the wrath of his enemies? Written by Santhosh

Raghuvaran (Dhanush) is an unemployed engineer who lives with his loving mother (Saranya), younger brother Karthik (Hrishikesh) and strict father (Samuthirakani). Raghu is an upright guy who finds it difficult to find a job which he loves and is not willing to settle for something that comes his way. He is constantly humiliated by his dad for being a loser in comparison with his younger brother a successful IT guy. The girl living next door, Shalini (Amala Paul) a medical student falls in love with him. And in a crucial moment he lets down his mother the only person who supports him, which leaves him heartbroken and devastated. Written by Saravanan Surya