Unable to find a job, Karunakaran decides to work as a henchman for a gangster. But he is forced to fight against his own gang when they hatch a plan to kill his lover Nisha and her parents.

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.

‘Honest’ Raj (Vijayakanth), a police officer in coma for four years, wakes up suddenly. Abhinaya (Gouthami), a newly appointed doctor, saves him from a killer with the help of Raj’s assistant Velu (Senthil).
In the past, Raj lived with his mother Maragatham (Manorama) and took the IPS exam. They shifted to their relative’s house in a village. Pushpa (Aamani), a village girl, fell in love with Raj. Raj’s best friend Bharatha (Devan) attempted to suicide after his father’s creditors pressured him. Raj saved him, and Bharatha lent his printing press company to Pazhani. Raj and Pushpa got married, and he passed the IPS exam successfully. Bharatha found counterfeit money in his factory and started an illegal business with Pazhani. Bharatha then became rich and killed his partners.

Dorai (Arjun) is a do-gooder don, but a police force led by ACP Easwara Pandian (Prakash Raj) and his sidekick (Sathyan) are after him. However, the poor need him as he is a Good Samaritan running an orphanage. He has help from his friends Subramani (Manivannan) and Ayyanar (Vadivelu). Dorai has a problem: his mother (Sujatha) doesn’t approve of his ways and feels he is just a loutish goon. There is also TV journalist Anjali (Mallika Kapoor), who is in love with Dorai because of his daredevil ways. Dorai has a past: he was just an honest-to-goodness schoolteacher who ends up as the deathly Dorai after a fire ravages a school and kills several children. The incident forces him to take on the system of venal officials and politics. Now, Dorai’s biggest task is to nip a dark and dire politician who wants to bomb the city. The rest, as they, are all cinematic clichés.

A seemingly down-to-earth guy Arun (Arvind Swamy) leads a life of a computer hacker by day and thief by night. When he meets Madhu (Isha Koppikar) whom he fancies, he wishes to turn over a new leaf. But Arun’s rogue brother, who has been blackmailing him since young to do his dirty deeds, does not think likewise. A deep love-hate relationship between them which unfolded during their childhood days traps Arun into a life of crime. How Arun chooses between his family and love forms the crux of the story.

Thigar (Tamil: திகார்) is a Tamil-language Action film which is Directed by Perarasu performed by Mukundan, Akanksha Puri, Riyaz Khan, Devan, R Parthiban, Suman, Priyanka on 21st Aug, 2015.