The film starts with Narasimha (Balakrishna) travelling across Karnataka, Kerala looking for peace with his son and ends up in Tamilnadu after finding the places not suitable for raising his son. In Kumbakonam, he visits the temple on Radhasaptami day looking for a job. The priest is unintentionally touched by the baby who picks up a discussion with Narasimha and it is ended by the temple secretary (Murali Mohan). The temple secretary then offers a job to Narasimha at his house as a driver. There are around 12 workers in the house along with Narasimha, Santhanam (Bramhanandam) and his wife (Priya). Meanwhile , the city kingpin Kariappan (Prabhakar) meets up with the ACP (Sekhar) who is sincere yet corrupt and arrogant. One day the secretary daughter Dhanya (Natasha Doshi) drives home taking drugs and catches the attention of Narasimha. The next day Kariappan and his men create a ruckus explaining that the car that Dhanya drove last night created an accident and his brother was the victim and he is out for vengeance. Narasimha takes the blame and gets beaten up which makes Dhanya fall for him.
Meanwhile, central minister JP (Jayaprakash reddy) visits the temple and insults the chief priest (L.B.Sriram), where the ACP raises hand against him. This results in a bramhin agitation, where they demand apology from the ACP. Narasimha enters the scene with the secretary and resolves it. This is telecasted by media and is attended by the main villain Thota Rami reddy (Ashutosh Rana). Meanwhile the ACP being humiliated tries to create a feud between Kariappan and Narasimha by killing the latter brother.
Kariappan knowing the truth sends his men to bring the son of ACP, who is a look alike of Narasimha son. Thinking his own son is at risk, Narasimha unleashes his other side on the villains, rescuing the baby, only to know that ACP is the father and Nayanthara is the mother. Next day Narasimha warns Kariappan and being confronted by Dhanya, reveals his past.
Narasimha an orphan is befriended by Gauri (Nayanthara) at school, who is the daughter of school head master. He is debarred from school after he picks up a fight. He grows up and has his own mechanic shed along with doing justice in the city. Along with that the love between Gauri and Narasimha increases. One day while passing the traffic, Narasimha encounters rami reddy son holding traffic for his MP seat. This results in a death of labored woman and narasimha teaches him a lesson without allowing him to attend his nomination. This results in humiliation by JP, who offers his daughters hand. Losing prestige, the son commits suicide, which enrages Rami Reddy, who takes revenge by destroying one of Narasimha’s associates Manga (Haripriya) marriage. Narasimha brings him to justice and is given death sentence by the judge (K.S. Ravikumar). Meanwhile Gauri forces Narasimha to marry him and talk to his father, who recognises him and says that his ways wouldn’t suit for his daughter’s hand. Out of respect to his master, Narasimha sacrifices his love. But Nayanthara take it seriously and escapes and makes it to his shed to marry him secretly.
Understanding the whole situation, Narasimha gets back to the shed marrying Manga. The actual twist in the tale happens now, when Narasimha and the couple gives birth to twins, with Manga dead after giving birth. On the other side, Gauri loses her son in pregnancy. Unable to hear his master pain, Narasimha sacrifices one son to her and leaves with the other and ends up in Kumbakonam. Back at present, Rami Reddy released on bail unites with Kariappan to kill Narasimha. Kidnapping the ACP couple lures Narasimha into the dockyard. Narasimha bashes up everyone and kills Kariappan before hanging Rami reddy. But during a shootout the ACP couple are wound along with their son. The doctors are able to save the couple but not the baby as the bullet had hit the head of the baby. Unable to bear the truth, once again the master laments, which makes Narasimha to give away the other baby and walk away with the dead baby corpse in his hand, assuring to the master that he will be there whenever the couple is always in danger.