A gang has kidnapped a girl and several police officers, including Karthik (Sibiraj), who is attempting to rescue her. During a shootout, one man from the gang and a police officer Arul (Raghav Umasrinivasan), who is a good friend of Karthik, are killed, while Karthik gets injured. He is put out of action and suffers from posttraumatic stress disorder.
Subramani (Idoh) is a trained military dog who has the potential to nab culprits and to decipher a crime scene. After its owner, an army officer, is shot dead, Subramani is returned to the officer’s father in Coimbatore, who is a neighbor of Karthik. The neighbor leaves the town and requests Karthik to provide shelter to Subramani during his absence. Karthik denies the request but provides shelter after seeing Subramani being troubled the small kids in the neighborhood. Karthik learns about Subramani and becomes good friends with it.

Five-year-old Krishna Mehra, son of Rohit and Nisha Mehra, undergoes an intelligence quotient test by a professor, who suspects that he has superpowers, due to Krishna answering all the questions flawlessly. His grandmother Sonia (Rekha) takes the young Krishna to a remote mountain village to conceal his unique abilities. Years later, Krishna (Hrithik Roshan) meets Priya (Priyanka Chopra) and her friend Honey (Manini Mishra) when Krishna’s friend Bahadur (Hemant Pandey) takes the girls’ camping crew near his home to camp. Krishna saves Priya from a hang glider accident and falls in love with her when spending time with her.
After returning home to Singapore, Priya and Honey are fired by their boss (Archana Puran Singh) for taking a non-permitted extension of 5-days in their vacation. In order to keep their jobs, Honey suggests her boss making a television program about Krishna. Aware of Krishna’s love towards her, Priya calls him to join her in Singapore to ask her mother permission to marry her. Krishna’s grandmother objects to this, saying that people will want to take advantage of his abilities. She then explains that his father Rohit was hired by Dr. Siddhant Arya (Naseeruddin Shah) to design a computer that could see the future in order to prevent wars and help prepare against natural disasters.

The lives of a few people get affected when ego clash erupts between a few cut-throat loan sharks.

Stuntman Bhaskar, a stuntman, is smitten with Cynthia, a college student. However, his heart is broken when he learns that she doesn’t love him back and he tries persuading her.

The film begins with a narration on how India has been turned into a landfill site for domestic and foreign countries, with the countries dumping even ammunition waste onto Indian soil. In Delhi, Balusamy, aka Balu (Arya), a communist leader, is convicted by the court on counts of robbery, murder and treason is given death sentence. Despite Balu’s request to execute him as a martyr by shooting, the court orders that he be hanged within a month’s time by a professional executioner or hangman. He is escorted to a high security prison complex in Chennai by Macaulay (Shaam), an honest, law abiding police officer who is given the charge of monitoring him until his execution. The prison provides freedom to all prisoners, including Balu, to do whatever they want, as long as they do not cause unrest. Balu is instantly admired by the inmates for his patriotism and philosophy as well as his empathy with the inmates. They view him as a spokesperson to the prison officials on behalf of them.

A young girl named Anitha fights against the corrupt government to reform the plight of innocent villagers who suffer from the hands of an unjust minister.

A young man with agoraphobia tries to get his sister married to the right guy. When things go horribly wrong, can he overcome his fears and ensure that justice prevails?

An NRI from Canada travels to Chennai to start a property business. As his company starts doing well, he realizes he is he being cheated by his most trusted people, and gets imprisoned for fraud. What happens next?

KL narcotics undercover Inspectors Sanjay (C Kumaresan) and Venkat (KK Khanna) become part of a high-tech force assigned to nab a Malaysian drug lord, Adithya Sharma. When the investigation turns deadly, the murderers kidnap the only witness and adding to this the assignment takes on further complications with misunderstandings between Kumaresan and Khanna. With time running out will the two be able to resolve their differences and rescue the witness? And how do they capture Adithya Sharma amidst all the twists?

Thavasi aka Chinna Gounder (Vijayakanth) is the village landlord and is responsible maintaining law and order in the village. The movie starts with a scene showing how skilfully Chinna Gounder solves a case quickly and is appreciated by an advocate (Ra. Sankaran) seeing his swift decision making skills. Chinna Gounder lives with his mother Aatha (Manorama) and is the most respectable person in the village, known for his justice and loyalty. Rivalry exists between Chinna Gounder and his brother-in-law Sakkara Gounder (Salim Ghouse), who is accused of marrying Sundari (Sathyapriya) following Chinna Gounder’s sister’s death.
Sakkara Gounder plans to grab the local temple premises by forging false documents, but Chinna Gounder exposes the frauds committed, thereby preventing the temple premises from going into the hands of the baddies. Sakkara Gounder is angered and waits for an opportunity to knock out Chinna Gounder.

A celebrated covert operation specialist Ajay Kumar is assigned a high risk mission to retrieve the detonation codes for deadly plutonium weapons stolen by terrorists to upset the world order. After putting his unparalleled skills to use he finds himself on the verge of successfully completing the mission, only to be shocked by treasonous acts which he wouldn’t have even dreamt of. He is then left to deal with overwhelming odds stacked against him in order to survive.

Romeo lives a wealthy lifestyle in Bangalore, India, along with his widowed mother. He had received considerable assistance and encouragement from Raj Mohan to dance and sing, and as a result gets very popular with young women. He meets and is attracted to Madhu, who is also his fan. His mother meets with Madhu’s grandfather and both arrange their wedding. Then Romeo finds out that Raj Mohan has been stealing body parts, especially kidneys, from patients in the Satya Moorthy Hospital, and then getting them killed via bus accidents. He meets with Raj and warns him that he is going to expose him publicly. Before he could that Romeo is shot, taken by ambulance, and thrown off of a cliff. His friend, Prakash, is blamed for this, is arrested, tried in Court, found guilty, and sentenced to life imprisonment. But Romeo survives, is looked after by tribal people, and several months later returns to Bangalore to expose Raj – only to find a look-alike, a Chandaal (Hindu Undertaker) named Badshah, from Bombay, has taken over his life, identity, love, and is residing in his very own home!