The killing of Narantak Roy, kingpin of the Waaji City underworld, spurns ferocious intra-cartel bloodshed among his lieutenants for control of the syndicate and thus, a global monopoly. Although, it is soon realized their efforts have been in vain as Roy’s son Vishwank arrives to succeed his father as leader of the crime syndicate. Vishwank is also determined to unmask his father’s murderer and sets out to lead Waaji City.
The story then turns to India, were a very intelligent thief steals almost 2 lakh crores with ease. A nationwide manhunt ensues to find the culprit. Undercover agent Ashok Chakravarthy is assigned as head of the manhunt taskforce. Though he initially refuses, he relents after finding out that Amritha Nair, a woman he is infatuated with, will also be on the taskforce. The taskforce uncovers the whereabouts of the thief and traps him during his next robbery after Amritha and Ashok fall in love. They let the thief take a black box that can open a locker containing treasures at a secure building in Waaji City.
Later, there is a chase in which Amritha, Ashok, and Officer David confront the thief at a bridge. It is then revealed that the thief was actually undercover officer Ashok Chakravarthy and the officer pretender with them is S. N. Saaho who is the actual person committing the robberies. As Saaho escapes with this partner David, Amritha along with the entire Indian justice department is stunned.
Afterwards, it is revealed that Devaraj killed Roy in order to gain power. Amritha then tracks Saaho all the way to Waaji city and pretends and she is still in love with him but is actually helping Ashok. Meanwhile, Amritha actually falls for him and betrays Ashok. While they are about to kiss, Amritha is shot and taken away by Devaraj. Saaho is forced by Devaraj to give him the black box, but later betrays him as he strikes a deal with Vishwank. Amritha is then subsequently saved by Ibrahim, one of Vishwank’s associates. Saaho is then chased by Ashok and the police, with Amritha in a helicopter with a sniper, As the sniper is shooting him, Amritha tries to save Saaho by distracting the sniper, but the sniper pushes her towards the very end of the Helicopter, Saaho saves her with a jetpack, but is later arrested by the police.
Saaho is taken to Devaraj’s village where he battles with Devaraj’s goons and defeats them easily. Devaraj arrives, And Saaho reveals that he is Siddhant Nandan Saaho, The real son of Roy. After revealing this, Saaho kills Devaraj.
Ibrahim reveals Saaho’s real identity to the members, and Saaho becomes the next kingpin of the underworld. Some months later, Saaho locates Amritha somewhere in Austria and confesses his love for her, and they share a kiss and hug each other. In a distance, a sniper aims at Saaho as he opens his eye.