Onti, a carefree young man, catches the eye of a gangster, Silk after he saves Paaru from him. In retaliation, Silk murders Onti’s dear friend which sets Onti on the path of revenge.

Aadhavan (Suriya) is a professional assassin working with his father Ibrahim Rowther (Sayaji Shinde) and brother Tharani (Anand Babu). Doctor Abdul Kulkarni(Rahul Dev) hires Aadhavan to kill prominent Judge Subramaniam (Murali), since he is handling the inquiry and verdict on Abdul’s child kidnapping, murder and organ trafficking cases in Kolkata.

After his wife’s murder he give up Mumbai and goes to a village with his two sisters for their safety.

Two police trainees witness the kidnapping of a girl one night on their way home. Unable to get help from the local police and determined to rescue the girl, they set out on their own amateur investigation.

Two sons of a labour leader, who is framed by his employers, grow up amidst great difficulties. The elder son turns into a don while the younger, protected by his brother and mother, becomes a cop.

The story revolves around an ego clash between father and son. Puli (Sundar C) is a local rowdy and the son of a math teacher Vedhukannu (Prakash Raj). Vedhukannu hates his son for being a rowdy and not being proficient in math. As part of a flashback, it is shown that young Puli was very good in physics, but his father, being a math teacher, wanted him to excel in math, which he was unable to do. As a result of repeated physical and mental abuse, Puli takes the wrong route to grow up. In the meantime, rival gangs and police try to kill him, but he is accidentally saved by his half-sister, a daughter from an affair his father had. Puli helps his half-sister in return for her unexpected help and vouches for her safety. The rival gangs kill her and put the blame on his father. How Puli brings the truth to light and unites with his family completes the rest of the movie.

Two retired colonels are at loggerheads with each other because one of them had been a traitor to the country. The grandson of the traitor and the grand-daughter of the other colonel fall in love but have to surmount a number of obstacles, including the one created by the girl’s grandpa, before uniting in matrimony. There is also a Brahmin’s daughter who loves the coloned’s grandson. In the end, the Brahmin’s daughter sacrifices her life to save her beloved. The traitor colonel also atones for his treachery.

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.

Although Thiru is a cop, and he lacks courage. His brother, Guru, always helps him win accolades and promotions, but a brutal incident makes Guru realize that he needs to help his brother in another way.

When a series of murders take place amidst the shooting of a movie,the CBI begin to suspect eccentric film director Rana to be a serial killer.

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.

Viswa (Dinesh) is a good for nothing guy who lives in a police colony and is son of an honest constable (Rajesh). It follows the conflict between a disciplinarian father and his wayward son. One day the constable dies in line of duty and the son gets his father’s job. The rest of the story is how Viswa becomes from a reluctant cop to a disciplined guy, who takes revenge against those who murdered his father.