A couple of people fighting amongst themselves to find a long lost treasure.

Shiva (Premji) is an amateur scientist aiming to send a rocket to cement the hole in the ozone layer. But his crazy attempts bring so many problems to his family members as well as neighbors. His school friend cum neighbor Jothila (Advaitha) is smitten by Shiva’s innocence and is ready to marry him. But on their marriage day a big problem occurs due to Shiva’s rocket invention attempt and that makes everyone abandon him. Shiva on his way to commit suicide comes to know about a bungalow where 49 people have died mysteriously. He goes to that place, risking his life to see whether he can continue his research over there. His experiences in the Bungalow forms the rest of the film.

Five college friends reunite after many years to help Devi, one of their friends who has woken up from a coma, get back with her lover, Babu.

Rangarajan (Parthiepan) is a physically challenged cab driver and he is also involved in real estate business to earn that extra money for his family. Since Rangarajan can converse in English, his manager (Singampuli) sends him to receive foreign clients and on one such incident, he meets an NRI named Kevin (Shanthanu). Rangarajan helps Kevin who wants a “homely atmosphere” to hire a private bungalow and gets his beautiful young wife Mohini (Parvathy Nair) to cook and do the housekeeping. During his brief stay in India, Kevin understands that Rangarajan is an alcoholic and the young Mohini is not in any way “satisfied with the old man”. This creates confusion in the mind of Kevin who falls for her and is led up the garden path.

An unfaithful newly-wed wife, an estranged father, a priest and an angry son suddenly find themselves in the most unexpected predicaments, each poised to experience their destiny, all on one fateful day.

Venugopal, a wealthy industrialist, marries a woman named Sushila and they have quadruplets. His brother Nandagopal tries to have her and the newborns killed by hired goons. However, the leader of the goons has no desire to kill the babies, so he adopts one (Michael), leaves one in an orphanage (Raju), one in a temple (Kameshwaran) who is picked by Palakkad Mani Iyer, a Brahmin, and one (Madhan) in a car that belongs to Venugopal.
30 years later, Madhan is now a London-educated businessman. Venugopal has raised Madhan as his adopted son, not knowing that he is his biological son. Venugopal is killed by Nandagopal and his nephew, Ramu for his inheritance, but unknown to them, the will has already named Madhan as the beneficiary.

A thief is mistaken for an NRI returning to work with a rich businessman and marry his daughter. The real guy, meanwhile, ends up with the thief’s friend. The odd pairs fall in love amidst the chaos.

Two villages on either side of a river are always feuding as the headmen Veerasamy (Vinu Chakravarthy) and Sethupathy (FEFSI Vijayan) have personal enmity. Due to some misunderstanding, Sethupathy’s children die, and the blame falls on Veerasamy. Sethupathy seeks revenge and tries to kill Veerasamy’s son but is saved by his servant’s son, but the boy disappears.
20 years later, Shiva (Arjun) is seen arriving in Kumbakonam, living with a bakery owner Veerabagu (Vadivelu). Shiva’s mission is to protect Devayani and her son from all sorts of gangsters. Priya (Reema Sen) walks into the bakery. Though she dislikes and torments Veerabhagu, she falls for Shiva. Sooner, Shiva’s true identity is revealed as he saves Devayani and her son from being murdered by Sethupathy’s son.

The hero who lives in the present day and does every odd job for survival. He is approached for help by a group of youngsters who want to rescue one of their friends from a kidnap. But that kidnap had happened due to mistaken identity.

Meena and Geetha fall in love with two guys, who apparently are college professors. The girls’ brother Krishnamurthy, an MLA, abandons the plan to get them married to ministers’ sons and reluctantly accedes to their wish. The girls are married off to their respective lovers, only to learn that the duo are not college professors, but two unemployed youths in search of jobs. Thrown out of the house by the furious family, the men open a fast food eatery to prove a point to their unforgiving wives. How the matter is resolved forms the rest of the story.

Saravanan (Udhayanidhi Stalin) is a jobless youth who roams around in a two-wheeler with his friends. Kalyanam (Soori), his uncle, aspires for a political career, but due to the error committed by a drunk photographer, Saravanan ends up as the local head of a national party, and this upsets Kalyanam, who is left with no option but to leave the country to take up a job in Dubai. His other uncle’s daughter Thaenmozhi (Regina Cassandra) returns to town after many years, and Saravanan is besotted by her and falls in love with her. In the meantime, Kalyanam returns and awaits an opportunity to teach a lesson to Saravanan. Whether Saravanan succeeds in his love and whether Kalyanam manages to put Saravanan in his place is told in the rest of the story.

Sakthivel, an irresponsible man, disapproves of the marriage arranged for him by his father and tries to ruin it. However, he is surprised to learn that the prospective bride is the woman he loves.