madcap musician cousin. Aadhavan uses this opportunity, plants a mobile bomb in the guitar and places it in one of the cars, which explodes at the wrong time, thereby failing to kill Subramaniam yet again. Meanwhile, a security officer, who is the chief of the security team protecting Subramaniam at Subramaniam's house keeps informing Dr. Abdul Kulkarni of Aadhavan's entry into the house and all his signs of progress and failed attempts. Thara is now suspicious about Aadhavan, but when she questions him in secret, he informs her that he is really Subramaniam's long lost runaway son Madhavan. Thara soon informs all the members of the household about Madhavan's return, and they are overjoyed, with Thara and Aadhavan falling in love. However, they hide it from Subramaniam and Ilaiyaman, because of the former's hatred towards Madhavan. Aadhavan, however, tells Bannerjee that he lied to Thara about being Madhavan to distract her suspicions and that he really is not him at all. However, on Thara's birthday, a flashback reveals that Aadhavan is indeed Madhavan. Years ago, a ten-year-old Madhavan unknowingly carries a gift with a hidden bomb for his cousin Thara's birthday. His friend's mother plants the bomb in the toy to avenge Subramaniam for her gangster husband's jail sentence. Though Thara survives, her mother, Anu opens the box and is killed along with her husband in the explosion. Subramaniam blames Madhavan for his sister, Anu's death and for his friendship with a gangster's son and thrashes him. In anger and fear of going to a juvenile prison, Madhavan steals a gun from the cops and accidentally shoots his father, Subramaniam and runs away from home. He kills his friend's mother as she is responsible for his aunt, Anu's death. He saves Ibrahim Rowther, then a local goon from death, is in turn adopted as his son, and rechristened him as 'Aadhavan'. Tharani tried to kill Subramanium, is stopped by Madhavan and reveals his true identity that he is the son of Subramanium. Ibrahim Rowther challenges that he will kill them within two days. Dr. Abdul Kulkarni is fed up with the repeated failed attempts of Madhavan. So, he makes another plan, threatens Ibrahim and his gang to surrender to the police, and make a confession about Madhavan and his plans. When the Assistant Commissioner of police confronts Madhavan and is about to have him hauled off, Madhavan gets Subramaniam's laptop