In a surprising turn of events, Raja discovers that Kumar's plan all along was to use the gang for a greater purpose. The Koh-i-Noor diamond was just a pawn in a larger game. Kumar had been secretly working with the government to clear the streets of India of notorious crime syndicates. The diamond was just a means to an end.
The story begins with Raja and his gang - including his trusted sidekicks, Kunal (Randeep Hooda) and Riya (Kareena Kapoor) - casing their next target: a heavily guarded jewelry exhibition in Mumbai. Their plan is to infiltrate the event and swap the Koh-i-Noor with a fake replica.
As the night of the heist approaches, Raja starts to have second thoughts. He thinks about his past and the loved ones he's lost due to his life of crime. His conscience is stirred when he learns that the diamond's insurance money will fund cancer research.
On the night of the exhibition, Raja's gang executes their plan flawlessly. However, things take a dramatic turn when they're ambushed by a cop, Pandit (played by a gritty actor like Suriya or Vijay). The cat-and-mouse chase through the streets of Mumbai is on.