Vanavarayan (Krishna Kulasekaran) and Vallavarayan (Ma Ka Pa Anand) are two brothers and carefree youngsters. One day, Vanavarayan meets Anjali (Monal Gajjar) in a marriage and falls in love with her. In the beginning, she rejects him. Vanavarayan follows her, and she accepts his love. Their love journey goes well, until one day when they travel to Pazhani. Anjali with her lover is seen by her drunkard uncle. After this incident, Anjali’s family arranges her marriage with a wealthy man Suresh (Santhanam). Anjali breaks down and secretly meets Vanavarayan, but the family mistakes them as they are running away. Anjali’s brother (S. P. B. Charan) beats Vanavarayan. On hearing this incident, Vallavarayan, in a drunken state, pulls Anjali’s father (Jayaprakash) from her house, beats him, and tears his clothes before the public. This makes Anjali hate Vanavarayan and insists he throw away his relation with Vallavarayan, then only she will marry him. Vanavarayan says that his brother is important to him than her and starts to ignore her. Vallavarayan finds that Vanavarayan is unable to forget Anjali, so he plans to reunite Vanavarayan with Anjali, but all plans go in vain. How Vanavarayan unites the pair and if Vanavarayan sacrifices his relation with his brother for his love for Anjali is the rest of the story.

The movie opens to a prologue, where King Parasbaram (Radha Ravi), ruler of a small rival kingdom and the nine ministers of the great Empire of Vikata Nagaram are on their way to a Chinese consulate’s mansion. They are warmly welcomed by General Wang (Wilson Ng) and courtesan Hong (Vivienne Tseng) once they reach there. The Chinese consulate, headed by Chao Gong Gong (Nickson Cheng), wishes to engage in trade with the people of the Kingdom of Vikata Nagaram and reap the benefits. Thus, the ministers strike a deal with Parasbaram and the Chinese to help them after being promed a huge share of the benefits. The Foreign Affairs Minister of Vikata Nagaram, Nandivarma Rayar (Joe Malloori) objects to this, saying that he doesn’t want to betray the King and his people for money. Chao Gong Gong then orders courtesan Hong to kill him with a poisoned needle from her hair.

Guruji (Gurmeet Ram Rahim Singh) is a spiritual leader who has a huge follower base. He has accepted the challenge of eradicating social evils including drugs and gender-related issues that have been prevailing in the society. Those with vested interests and apathetic towards the welfare of the society are now disturbed as there’s someone who has taken control of the situation. They conspire to kill him.

Sanjay buys a haunted property in a village and invites his friends to uncover the mystery of the house. However, things get complicated when two of his friends die.

Arivu, an unemployed youth, strives to find love and settle down but luck does not favour him. Just when he falls for Savithri, an ex-lover returns and creates problems between them.

A couple in love, accidentally become teenage parents. Unpleasant situations make them fall apart. Manikandan, left alone with his son, struggles as a single teenage father. Fate owns him, bringing Sindhu back into his life.

65-year-old Ganeshan has completely lost the zest for life after his wife’s passing. But the news of his 7-year-old grandson Aadith’s visit to India gives him a new lease of life. When all attempts to bond with the superhero fanatic Aadith fail, Ganeshan and his retired friends join in the madness of pretending to be a superhero league. The idea works like a charm. Little Aadith’s excitement knows no bounds when he witnesses a secret meeting of this ‘league’. Ganeshan is elated to receive his grandson’s genuine affection for the first time. But the happiness is short-lived. The very next day a small girl gets kidnapped from their apartment complex. As the police start a preliminary investigation, Aadith turns to his grandfather with a glint of excitement in his eyes. He knows, just like any superhero, his ‘thaatha’ will solve the case in no time. Left with no choice, the old man turns to his ageing cronies. And thus, with aching knees, weak eyesights and greying hairlines, this League of Super (senior) Heroes is set upon their first mission.

When Mani, a lineworker who is unhappy in his marriage, manages to make a time machine work due to an accident, he goes back in time to change his life.

Devaraj (Vinod), a gangster, is hired to steal a bag from a house, and he delegates this task to his underlings, Varadhu (AP Shreethar), Rathna (Raj Bharath), Ritchie (Madhivanan Rajendran) and Sethu (Balaji). Varadhu, who has just broken up with his girlfriend (who has insulted him for being a nobody), finds out that the bag has crores of cash and decides that this could be his moment to get rich. The four criminals scoot away with the bag to a remote village, where they take refuge under Janardhanan (Amarendran), an elderly man whose family were once zamindars, and Bala (Tejaswini), his young wife(Mithra Kurian). During their stay, Rathna and Bala begin an affair, and Arasi (Pooja Devariya), Richie’s girlfriend, also enters the scene. She causes a problem between Richie and his gang causing the couple to break up. Devaraj tracks them down and in a freak accident, becomes paralyzed. Janardhanan dies in a hunting trip and Bala is united with Rathna. They all start a hotel by the name of Andhra Mess in Janadhanan’s property.

The film starts with Thamizharasan (Sathyaraj), a reformist who enters a village with the intention to unite a couple and help a young girl Sandhya (Madhumitha), who aspires to be a singer. Bala (Siva Balaji) is in love with Sandhya. There, Thamizharasan faces the anger of Sandhya’s father (Dhandapani), a strong believer of older ideologies. Sandhya hates Thamizharasan, and the reason for that is told in a flashback, which starts with Thamizharasan’s wife Maheswari (Namitha) aspiring to be a sports champion. Thamizharasan motivates and helps her. Due to some family problems, Maheswari commits suicide after making her husband promise to help her sister to become a popular singer. The rest of the film is how Thamizharasan fulfills Maheshwari’s promise and helps unite Bala and Sandhya.

Priya Amal Raj (Kajol) lost her mother at a very young age. She is friendly, outspoken, sensitive, yet precocious. Priya is brought up by her dad, Amal Raj (Girish Karnad) who is a clothing industrialist. Since her childhood, Priya is interested in singing, music, and church.
Thomas Thanga Durai (Arvind Swamy), a polite, well mannered NRI businessman, returns to India from America to look after his father’s James Thanga Durai’s (S. P. Balasubrahmanyam) business. James is a former associate in Amal Raj’s business and now establishes his own business empire in the same vicinity, opposite Amal Raj’s factory. He boasts of his son’s achievements. However, Amal Raj dislikes James’ ill-mannered, clumsy and bizarre antics though Thomas and Priya have known each other in their childhood.

An astrophysics student and an eccentric singer hatch an outlandish plan to travel to Mars. But all visionaries must face impediments before accomplishing their dreams; in this case, the duo will have to deal with brain-dead cops, Dons with trust issues and suicidal IT employees before pulling off the impossible.