Pazhani, Velu, and Senthil kill a "high profile" don at a restaurant in North Madras (Madras is the former name of Chennai, the capital of Tamil Nadu state in India). Senthil requests Guna and Velu to surrender for the murder while he bails them out. A year later, the pair is still in prison, and it creates a deep rift between them and Senthil, despite Mani and Thambi, the dead don's younger brother intervening. 2000: The new warden of the Madras Central Prison plans to weed out all nefarious activities in the prison, which are being controlled by Senthil from the 7th Block. Senthil sells drugs worth millions every month in a very elaborate manner, and never steps out of the 7th Block, fearing for his life from Guna's men in the 11th Block. Anbu and Velu's brother Siva is brought into the prison for fighting. Anbu saves one of Senthil's henchmen, Raju, from being killed by Siva. Anbu is placed in the 11th Block under Velu and Mani. During a raid, he gives away a mobile phone belonging to Mani and is almost killed for doing so, before being saved by the warden. He is shown to have saved his right hand from any injury, while being attacked. 1991: Anbu, Carrom, & Padma Anbu, a 20 year-old skilled carrom player, whose friend Siva often gets him to play bet matches. On the night Rajiv Gandhi is assassinated, the entire hamlet where Anbu lives loots nearby shops and makes away with various goods. A masked girl steals a sewing machine from Anbu, but he lets her go. The next morning, local cops, along with Thambi, come to recover the stolen goods. Despite having his goods returned, the shopkeeper is keen on filing a complaint against Anbu, as Anbu had hit him the previous night, under the pretext of not returning the sewing machine. Anbu, in turn, goes and accosts the girl, Padma, but she refuses to return it. Anbu gets beaten up by the shopkeeper and loses badly in that year's carrom tournament. Anbu and Padma begin a relationship, during the course of which Anbu saves Guna from contract killers during a festival. The killers reveal that they are Senthil's men, and things only worsen between Guna and Senthil. 2000: Raju helps Anbu shift to the 7th Block after he cleverly smuggles in contraband for Raju. Meanwhile, Senthil is still