Arivanandham is a man who runs a shop. He kidnaps three government officials and tells the press his name is Citizen by changing his appearance to their jobs. Meanwhile, CBI Officer Sarojini is given the case of finding the officials and capturing Citizen. She finds evidence that they link to a village called Atthipatti. She goes to a place, where they keep old maps of India. She notices that from 1970-80, the village was missing. She then inquires a Church Father who knows about Atthipatti. He gives them a box full of evidence about the village. She then discovers that the people of Atthipatti are under a old river, which is a construction site. She orders her men to dig it up, and they find corpses. Sarojini finds links to Arivadhanam but cannot identify him. Arivadhanam kidnaps the third man but is stuck in traffic. Sarojini is also in traffic. To clear the traffic, Arivadhanam creates a problem and sorts it out by donning a traffic inspector’s identity. Sarojini drops her handkerchief while in her car, then Arivadhanam swaps it with a paper and gives it to her. She accepts it, then Arivadhanam phones her and tells her she met with Citizen. Outraged, Sarojini decides to ambush his hideout. They track down his location, but he is nowhere to be found. They find masks, computers, and newspaper cuttings. Sarojini finds Arivadhanam in a mosque and arrests him. Arivadhanam is taken to court and is inquired about why he kidnapped the officials. He retells his memory.

Singam (Krishna Sekhar) gets cheated out of an original idea of his by a prominent person in the society. He decides to stop pleading and start threatening. He begins with a plan to corner the big shot. He meets Krishnaveni (Vijayalakshmi Agathiyan), who has left home and needs fast money. With a common purpose, they soon become partners and work out a plan. They blackmail the big shot with videotapes that they threaten to release all over the media if he refused to pay up. Buoyed by the success of their maiden outing, they decide to become con artists. They are successful in various ventures and finally end up blackmailing a minister. The minister, after initially caving in to their threats, decides to settle scores. What happens next forms the rest of the story.

Dandapani (Karunaas), coming from a poor background, nurtures his ambition to become an owner of businesses like Reliance, Vasant & Co., Saravana Stores, etc. He meets Nandhini (Navneet) who falls in love with him because of his steadfast ambition. He is not in a position to accept owing to his goals. Thereafter he gives all his hard-earned money to Annachi (Kota Srinivasa Rao) to own a shop in his newly constructed complex. Before the construction is over, Annachi dies. Annachi’s son does not believe that Dandapani could have given money to his father and he forcibly chases away Dandapani, while he is also later betrayed by Karthi (Ambani Shankar). Later he learns that Dandapani paid 35 lakhs for the shop from Registrar. Finally Dandapani succeeds in getting a new shop and sets up his supermarket.