Vazhthugal revolves around Kathiravan, a successful entrepreneur who manages a software company. Kathiravan is an affectionate son and socially responsible too. His company is involved in various social activities.
When his close friend’s parents are forced by their daughter-in-law to leave home, Kathrivan decides to marry a girl who will keep his parents happy. While watching a television programme he is impressed by Kayal, a college student from Coimbatore being interviewed on a show.

College students, Shakthi and Josesh, fall in love with girls of the same family. When the family learns about the love affairs, they are ready to go to any length to save their honour.

A day before her marriage, Reshma (Vidya Balan) runs away from her rural village, hoping to become a star in Chennai. She fails to impress a casting director, and he insults her for being unattractive and unable to act. Determined to secure a role, she spontaneously auditions for the position of a background dancer. However, she dances in a sultry manner, using erotic movements which annoys the film’s director, Abraham (Emraan Hashmi). He edits out Reshma’s entire dance sequence. The film fails at the box office, much to the dismay of the producer Selva Ganesh (Rajesh Sharma), who later recalls Reshma’s performance and offers her a role in a song in his upcoming film. Selva also suggests that she now be referred to as “Silk”, which is more exotic and captivating.
At the first shoot, Silk dances with veteran actor Suryakanth (Naseeruddin Shah), her childhood idol. Enamoured with him, Silk gains his affection and attention by offering a long-term sexual relationship. Meanwhile, Abraham proposes a new film to Selva Ganesh and is keen to cast Suryakanth. However, Suryakanth’s suggestion of adding sex and eroticism, to make the film more commercially viable, angers Abraham. Silk slowly builds a name for herself in the industry and goes on to do many more sexually charged films with Suryakanth, which catapults her into stardom. She gains many male fans and, in a short time, becomes immensely rich and popular as a Southern sex symbol.

Four immigrants (Pandi, Murugan, Afsal and Kumar) are detained by the local state police, tortured and forced to admit to a crime they have no knowledge of. When all hope seems to be lost, a policeman from their hometown speaks on their behalf at the court hearing, setting them free. The policeman asks for a return favor and the boys oblige, oblivious to the consequences that await them. As they unwittingly bear witness to a political treason, the system seeks to silence them at any cost. But Pandi is determined to be heard.

A young innocent couple’s life is driven into a war against the impacts of the corrupted social discriminations in order to achieve their dreams.

Karthik and Kavya are the children of Rama Chandra Rao (Rao Ramesh). Rama Chandra Rao wants to make Karthik a collector. The only problem is that Kavya wants to become a collector as well, but Rama Chandra Rao cannot afford to pay for both of their studies. Because of this, Karthik deliberately fails in his exams so that his sister can join Delhi Public School in order to become a collector. The only one aware of his sacrifice is his uncle (Tanikella Bharani).

Ten-year-old Anna suffers from a rare and incurable disease. With the help of her mother Christy, she begins to heal miraculously that surprises her family and the medical specialists.

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.

Five college boys while away their time by going after girls and getting drunk at parties. However, they are forced to earn a living when one of them gets married against his parents’ wishes.

Three friends leave their homes when their parents refuse to support their dreams. Later, when they meet a friend in Chennai, they begin to pursue their ambitions.

Hariesh (15) a teenager admires Alma (18) an NRI from White Town in Puducherry. When he finds her spending more time using mobile with her friend Prithvi (20), he decides to buy one. But neglects latter due to the doubt on her behavior with Prithvi. What happens if the cultural difference confuses him, and how he handles to get through the same.

The film is about a young writer Anbu, who deals with a mental disturbance, due to his circumstances and the worst possible situation he is living in. Being isolated from social activities Anbu leads his life with guilt consciousness. Betrayal, rejections, illusions, anger, unknown voices around, and searching for a reason for self-destruction make Anbu take an important decision.