In Kuala Lumpur, Malaysia, the Asian illegal drug trade thrives under Singhania, one of Boris’s two lieutenants. Singhania’s network is managed by his trusted associate Don, a powerful and elusive criminal. Deputy Commissioner of Police D'Silva leads a dedicated task force aimed at capturing Don and dismantling the cartel. Don, however, remains untouchable and ruthless, murdering Ramesh, a gang member who tries to leave the life. Ramesh’s fiancée, Kamini, tries to help the police trap Don but is killed as well, and Roma, Ramesh’s sister, joins Don’s gang to avenge her brother and Kamini’s deaths.
During a failed operation, Don is severely injured and falls into a coma. Seeing an opportunity, D'Silva recruits Vijay, a lookalike of Don and a simpleton from Mumbai who makes a living performing stunts. D'Silva trains Vijay to impersonate Don and infiltrate the gang, promising schooling for Deepu, a child Vijay cares for. Meanwhile, Jasjit, Deepu’s estranged father and a former IT professional, is released from prison. Years earlier, Jasjit was coerced into stealing diamonds to save his kidnapped wife but was caught by D'Silva, who did not believe his story. Jasjit's wife died during the ordeal, and he now seeks revenge.
In the hospital, Vijay undergoes surgery to match Don’s appearance. When Don dies from cardiac arrest, Vijay assumes his identity and re-enters the criminal world. D'Silva assigns Vijay to recover a disc containing details of the cartel’s operations. During this mission, Roma attempts to kill him, but D'Silva intervenes and reveals Vijay’s true identity. Vijay retrieves the disc and hands it to D'Silva, who later kills Singhania in a nightclub raid. During the shootout, D'Silva is fatally wounded, leaving Vijay without anyone to confirm his real identity. Arrested and disavowed by Don’s associates, Vijay escapes during a prisoner transport and seeks out Roma to prove his innocence.
Jasjit, meanwhile, finds the disc in D'Silva’s apartment but is forced to exchange it for Deepu’s life when he is contacted by the boy’s captors. He discovers that D'Silva is alive and is actually Vardhaan—the second of Boris’s lieutenants, long believed missing. Vardhaan had orchestrated the entire plan, using Vijay to eliminate Singhania and gain control of the cartel. Jasjit rescues Deepu and joins forces with Vijay and Roma. Together, they inform Interpol, and Vardhaan is arrested after a confrontation with Vijay.
With his name cleared, a wounded Vijay is taken to the hospital, where Roma confesses her love for him. He responds affectionately, but as he is wheeled away, Roma realizes—too late—that he is not Vijay. In a twist ending, it is revealed that Don is alive and was pretending to be Vijay all along during the hospital encounter. Don recovered from his coma, overheard D'Silva and Vijay’s plan, and swapped places with Vijay after the surgery, ultimately murdering him by injecting a fatal dose of diazepam, making doctors believe Don had died. The disc he later surrendered to authorities was a fake. With Singhania and Vardhaan removed, Don reclaims his position at the helm of the Asian drug cartel.
