The story starts in a jail, where prisoner Muthupandi (Prabhu) is being interrogated by a police officer (Vijayakumar) about his past. Without hesitation, Muthupandi tells. Muthupandi is a son of the soil, a very hard working self-made man who dotes on his only sister Kavitha (Trisha Krishnan). Their mother died very early and it was Muthupandi who brought up Kavitha with a lot of love and affection. Kavitha’s best friend Lalitha (Richa Pallod), who is getting married, takes Kavitha to her house for the nuptial ceremony. As an emotional scene prior to this notes, this is the first time Kavitha has been away from her brother.
Rama Rao fails to get a job with the police force due to his father's connections with a gangster. But when his brother is killed by the gangster, Rama Rao becomes Baadshah to oppose him.
Alby, who is married to the girl he loves, Sara, against the will of both their families. While the couple leads a romantic life in a residential complex in Kochi, Alby, who is a passionate and hardworking filmmaker, begins to face financial liabilities. Being stressed, he soon gets involved in a thoughtless act and finds himself in an unpredictable situation. Alby's life then begins to go beyond his control.
Balachandran, a struggling man who is forced to pose as the makeup artist of his newly married wife when she unexpectedly becomes a film star. As he juggles jealousy, deception and fame, their secret marriage spirals into a series of comic and emotional twists.
Nandu and Vijay are brothers who were abused by their stepmother during their younger days. Nandhu, who is mentally ill, decides to kill Vijay's fiancee as he visualizes her as his stepmother.
Vishnu wants to marry his childhood sweetheart whom he meets after fifteen years. However, problems arise when the girl's father plans to get her married elsewhere.
Omanakuttan is an introverted salesman who is down on confidence and luck. Spurred on by his colleague he decides to change himself and tries to act like a flirt. He meets Pallavi a free spirited girl, but as luck would have it he wakes up with memory loss and struggles to figure out who he really is. Both of them join in on an adventure to figure out the real Omanakuttan.
Mohan, an IT youngster with a snoring issue starts his life with Anu, the girl of his dreams, hiding his issue. However, trouble begins, when his snoring starts affecting his life and the health of his partner.
A shady money deal goes wrong and in the aftermath Mathan ends up killing a police officer. Meanwhile in Kochi, his old flame Aparna an aspiring actress is struggling to prop up her career. Mathan meets up with Aparna and tries to rekindle the past, even as the police hunt for him gets intense.
Velu, a cowardly cop with a family to support, is told that he has blood cancer and so, to get insurance and keep his family financially stable, he goes on a suicidal mission, by taking on criminals singlehandedly.
Appu and Achu are twin brothers who do not get along with each other since childhood. When their enemies create misunderstandings between them, they bay for each other's blood.
Five people from varied strata of society – a slum dweller who works as a cable operator, a runaway prostitute, a desperate woman drowning in debt, a rising musician, and a grief-stricken Muslim man – end up together in the same hospital, at a time when it is attacked by terrorists.
Madhavan is a petty thief who is accused of stealing the idol of the village goddess. However, he soon escapes police custody and tries to find the real culprit.
After his encounter with a chirpy girl, Anjali, during their train journey, a depressed Sakthivel's attitude towards life changes. Though he is attracted to her, he agrees to help her unite with her lover.
Aranmanai is about a family that wants to sell their ancestral home. The supernatural elements they discover there in the aranmanai (palace) lead to some bone-chilling moments.