A soulful romantic comedy with a twist, this evocative tale revolves around three people who must come to terms with their interwoven past, and establish a healthy harmony in their relationships.

The story takes place in Panimalai, a hill city, during a spring season. The film begins with RJ Balaji coming to Panimalai to be a guest of a live radio show. In the middle of the show, he starts coughing severely and suddenly loses his voice. He is diagnosed with a new type of virus called the mute flu that causes sudden muteness and sometimes even death.
Aravindh (Dulquer Salman) is a sales representative working with a glue company. His dream is to become a radio jockey, and he even attends interviews with a FM station. As the mute flu spreads across the city, the state government sends Health Minister Sundaralingam (Pandiarajan) to Panimalai to take care of the situation. The people are asked to undergo a medical checkup to check whether they are affected by the virus or not. Aravindh goes to the hospital and meets Anjana (Nazriya Nazim), a junior doctor, who believes that talking is the only cause of all the problems in the world and if people keep things to themselves things will be very fine. Anjana is in a relationship with Vinodh (Abhinav), a possessive guy who always commands her on what she should do and what she should wear. Anjana lives with her father and stepmother Vidhya (Madhoo). Since Anjana lost her mother at a young age, she is reluctant to accept Vidhya as her mother, though she is a sweet and caring woman, and always maintains a distance from her. Vidhya is an aspiring writer who is trying to get her husband’s (Abhishek Shankar) attention and support to write her third book. Her husband finds no time to talk to her as he is too busy with his work.

A conman tries to save an innocent girl from the clutches of a womanizer after realizing that he had fallen in love with her.

The trials and tribulations of a young man who comes to the city to become a don.

Rasu (Santhanam) and Mokkai (Ganja Karuppu) are youngsters sharing a hostel with a diverse group of people. Those people include Professor Mani (Madhan Bob), a staunch atheist Thanjai Rudran (Rajesh), a poet, and other unemployed, struggling men. Rasu, who works in a coffee shop, is in love with Mahishasuramardhini (Madhumitha), but she seemingly ignores all his advances. Rasu was even attacked by her brother after hanging around her house for extended periods of time. Mokkai, who is unemployed due to his lack of education, and does whatever job he can find, dreams of marrying his uncle’s daughter back in his village. After a particularly bad day where Mokkai is arrested and beaten by female police officers and Rasu’s lies of being in a well-paid job are uncovered (to Mahishasuramardhini’s disgust), the two are also kicked out of the hostel by the owner due to the inability to pay rent. On their last night, both vent their frustration at Kadavul (God) after heavy drinking. Both are shocked when Kadavul (Prakashraj) appears in front of them. Mistaking him for another unemployed fellow, the two head back to their hostel room only to find Kadavul waiting for them in it, waving aside this miracle, all three fall asleep. The next morning, Kadavul finally manages to convince Rasu and Mokkai of his true identity after appearing in the forms of Vishnu, Jesus and Buddha.

Shakthi (Bharath) becomes the managing director of Rajasekhar group of companies following his father’s death. He feels highly dejected because of troubles surrounding him such as continuous loss in business and also his girl friend Anita (Shammu) ditches him and marries another guy. Above all Shakthi develops enmity over his mother after she decides to remarry following her husband’s death.
Bombarded with troubles, Shakthi one day leaves his office and boards a train without even knowing the destination. In the train, Shakthi meets Anjali (Tamannaah), who is more bubbly and talkative and she is on her way back to her hometown Theni after completing her studies. Anjali keeps talking to Shakthi continuously which irritates him. Shakthi plans to jump from the fast moving train to end his life, but due to Anjali presence, he could not do it. Anjali informs Shakthi that she is in love with Gautham (Munna) and also about her plans to elope with him as her family is highly orthodox.

Sera (Krishna) is a man who earns his living by retrieving dead bodies from Kodaikanal’s Green Valley View suicide point. Nandu (Karunas), Shanmugam (Thambi Ramaiah), and a mute friend are part of Sera’s crew. Sera meets Kavitha (Bindu Madhavi) when he and his crew retrieve her sister’s body from a gully after her sister had committed suicide with her boyfriend. Kavitha falls in love with Sera. A parallel plot is of Ayya (Jayaprakash), who trades in stolen tea, with corrupt officials turning a blind eye to his activities. Iyya’s gang kills 4 police officers during a raid and throws the dead bodies from the suicide point. Ayya, who knows Shanmugam, threatens him not to retrieve the bodies of the police officers. Fearing for their lives, Shanmugam tries to convince Sera not to retrieve the bodies. Brushing aside Shanmugam’s fears, Sera’s crew retrieves the bodies. After retrieving the bodies, Sera informs the police of the murder by Ayya, resulting in Ayya’s arrest. Ayya comes out in bail, and his men kill Shanmugam, Nandu, and Sera’s mute friend. Sera kills Ayya’s henchmen. Kavitha consoles Sera, and they both decide to run away from Kodaikanal to lead a peaceful life. They both board a jeep, and on the way, Ayya arrives with his men, and they start attacking Sera. Sera kills most of them and also Ayya. He rushes back to the jeep but is shocked to see Kavitha dead. Sera understands that Kavitha was accidentally stabbed to death during the fight. Sera cries loud, jumps from the mountain, and kills himself along with Kavitha’s dead body.

Santa helps a gangster Bhavani’s sister elope with her lover enraging him and unknowingly falls in love with Bhavani’s younger sister.

A doting wife goes through a hard time trying to save her husband who is possessed by two spirits.

A young ne’er-do-well is given a wake-up call when his girlfriend is kidnapped by an evil don.

Pugazh, a police officer, wants to avenge the death of his father. He kills the four notorious criminals who were responsible for this heinous crime.

It is a roller coaster of love, sentiment and emotions that are attached to technology that has been used with a car named Roger.