Defense Minister Ritwik Sodhi passes a gun amendment bill that enables one to own a gun. This is the story of how Happy, Lucky, Max Pain, Uncle Fixit, Serena and William’s stories intertwine among themselves amidst passing of the gun bill.

The protagonist`s family wants him to continue his family legacy by becoming a policeman. The journey, however, is not going to be easy since he has a minor defect in his body, Will he let this obstacle stop him from pursuing his parents` dream or will he overcome it to come out on top, This struggle forms the core content of the movie.

Sakthivel, an influential man, is upset with his son Chinnarasu’s careless attitude. He is further infuriated when Chinnarasu suddenly refuses to marry his cousin, Gowri.

Petty criminal Naai Sekar kidnaps dogs belonging to the rich in order to collect a ransom, but makes a critical mistake when he abducts the dog of a ruthless gangster.

The story begins with a group of government officers coming to list the number of devastated houses. The officers promised them to give a big amount to build their house but in exchange for a little amount to register their name. So the illiterate villagers, who wants to make easy money, demolish their house. The officers turn out to be frauds. The village panchayat president (Vinu Chakravarthy) knows that the villagers will not interfere in his decision until they are uneducated. Sivaraman (Sivakumar), a new school teacher, tries to change their custom and the children are happy to learn at school. Soon, Sivaraman has trouble with the village head.

Bhoopathy (Vijay) is a happy-go-lucky person who is very relaxed in life, as shown when he falls asleep in a train and misses his station. He goes to Villivakkam in search of Vishwanathan (Nassar), who is his father Mani’s (Manivannan) best friend. Kattabomman (Vadivelu) is Vishwanathan’s assistant who torments Bhoopathy right from the day they meet. Vishwanathan’s first daughter Priya (Sneha) initially hates Bhoopathy, and they are at constant loggerheads at each other. When Priya’s aunt (Suhasini Maniratnam) is going to leave, they again fight and the same old revenge story takes place. Soon, however, Priya falls for Bhoopathy. When Bhoopathy comes to know about this, he is reminded of his father’s words that he should not make him ask forgiveness to his friend under any circumstances. Although Bhoopathy also likes Priya, he controls his emotions and keeps silent. He tries to leave but is caught by Vishwanathan and is forced to come back. Priya receives a call from her friend to come to her wedding. On the insistence of Priya’s younger sister, Vishwanathan sends Bhoopathy along with them. There the groom Sriman (Sriman) makes him drunk and he reveals his feelings about Priya. They become friends soon. Then they all go to Black Thunder and a photographer (Pandiarajan) they meet takes a photo of Bhoopathy and Priya holding hands.

While transporting a dying man to the hospital, two paramedics find a million dollars in cash sewn into his clothing. When the man dies, they decide to keep it, setting them on a path for a hellish night of violence and mayhem.

Shiva(Shiva), the Universal cop has left the police department and has returned to his hometown Cinemapatti. He is brought back in to resolve a crisis. Once the situation is handled, he is asked to join the department by the Commissioner of Police Yezhusaamy, but he refuses and walks away. P(Sathish), a dreaded don who poses a threat to society kills Shiva’s wife by using a cell phone bomb. Shiva is forced to rejoin the department.
Meanwhile, Shiva is finding a girl to marry on his grandmother’s request. His conditions for a girl are, he wants a loosu ponnu (a bubbly but crazy girl). He sees Ramya, and assumes that she is crazy since she went into a mental hospital van. With the help of his friends, he proposes to her and she agrees for it.
Shiva learns that P has fixed a bomb somewhere. By the clues which were given by P’s henchman Wasim Khan. Shiva finds that P has fixed a bomb in a bus. He comes to know that P has fixed the bomb such that if the bus is driven less or more than 5km/h, it will explode. However, Shiva saves the people inside the bus. Wasim Khan is killed by Ritika, P’s henchwoman. Shiva then discovers that there was someone in the department who is informing P about their ideas. He discovers and kills Inbashekhar, the mole, and is suspeded.

Karthik (Nagarjuna Akkineni) is a rich architect in Ooty. He falls in love with Padmavathi “Padhu” (Gracy Singh). Padhu is hesitant to accept and reciprocate Karthik’s love, as she doesn’t know what kind of a person he is. Padmavathi has a younger cousin named Bhanu (Shriya). Bhanu encourages their love and gives courage to Padhu’s feelings. When Padhu reveals her love, her father Rama Chandraiah (K. Viswanath) enraged, resists and asks her to marry the guy he has chosen for her causing Padhu to elope marry Karthik.

A site engineer, who suffers from night blindness, gets into trouble when he is mistaken for the leader of a protest group by a goon. His life becomes even more complicated after he falls in love.

Finance and romance can never go hand in hand. This is the story of a focused and determined Shruti and a fun-loving, carefree Shaktivel, who by chance become partners in their very own wedding planning business. Together, their friendship and business, enters the ups and down of the lavish Chennai weddings. And while trying to find themselves, Shruti and Shakti discover each other and realize that rule book cannot be followed always.

Follows a taxi driver who picks up a girl while he is on the run and ends up in a crazy roller-coaster of events.