ACP Shivakumar IPS (Raghava Lawrence) is a corrupt police officer who gets himself transferred to Chennai and misuses his power to gain money in unorthodox methods. During this process, he encourages an MP named GK (Ashutosh Rana), who has become a headache to Kirubakaran (Sathyaraj), the Police Commissioner of Chennai. Shiva happens to be Kiruba's son, who is angry on the latter as his supposed negligence killed his mother (Sukanya) and just-born sister, though Kiruba actually left his wife in the hospital to save several children in a terrorist attack. Unaware of this, Shiva left Kiruba, joined an orphanage, and became an IPS officer to seek revenge on him.

During his life at Chennai, Shiva meets Jaanu (Nikki Galrani), a journalist working for Sun News; and Nithya, a philanthropist who works in a coffee shop. Shiva loves Jaanu and expects her to reciprocate the same, only to get rejected by her because of his corrupt nature. Nithya is brutally killed by GK's brother Sanjay (Vamsi Krishna) when she tries to save a techie from being sexually assaulted near HITEC City. Nithya's death enrages Shiva, so he turns against GK.

GK wants to make Sanjay a politician, and Shiva challenges GK to save Sanjay from getting arrested. GK manages to kidnap the techie, but with the help of a transgender that witnessed Nithya's murder. Shiva arrests Sanjay with a non-bailable warrant and challenges GK to bring Sanjay out of jail within three days. Meanwhile, Kiruba and Shiva are reunited, and Shiva's marriage with Jaanu is approved. On the third day, GK's men kidnap the transgender and Jaanu. Shiva and his team go to the spot to save the witness. However, Shiva could not save the transgender, as she was killed by the kidnappers.

Shiva receives a call from GK, who says that he has kidnapped Jaanu and Kiruba and challenges Shiva to save them by bringing Sanjay to him. GK then kills Kiruba and Shiva's team. Meanwhile, Sanjay and his friends are released from jail, and Shiva soon kills them. Shiva reaches the spot after tracing Kiruba's GPS signal. On arriving, he finds Kiruba dead and Jaanu attached with a bomb. After a long fight, Shiva kills GK's henchmen and Saves Jaanu. At that time, Shiva's service vehicle and the police reach there. GK and his partners are thrown into the vehicle, on which petrol is poured. Shiva shoots the van, and they die in the blast. Kiruba is then admitted to the hospital. Shiva finds out that he is still alive as he can hear his heart beating. Shiva reunites with Kiruba once more.