Don

Don is a notorious Mumbai crime boss who eludes authorities. For years, DSP D'Silva, Inspector Verma, and Interpol officer Malik chase him across borders but never close the net.

In a high-speed chase, Don is severely wounded and dies in front of D'Silva. D'Silva arranges a secret burial and keeps Don's death hidden from everyone.

D'Silva discovers Vijay, a street performer who looks like Don, and recruits him to infiltrate Don's gang. He promises to secure education for Vijay's adopted children Deepu and Munni in return.

Vijay undergoes training and returns to Don's gang disguised as an amnesiac Don hiding at an apartment complex. The disguise allows him to observe the network from within.

Vijay deepens his cover and learns about the crime network, secretly passing a diary containing the network's secrets to D'Silva. Roma nearly kills him after learning that Don killed her brother Ramesh and her fiancée Kamini.

D'Silva arrives and reveals to Roma that he is actually Vijay, not Don. This revelation changes their dynamic and sets up how they will operate next.

Before a party, Don secretly provides information to D'Silva about a meeting of the network. A shootout erupts at the party, and D'Silva is killed in crossfire.

Following D'Silva's death, Vijay is taken into custody by Malik's police team. He argues that he is not Don and points to the diary as proof, but the diary is nowhere to be found.

Unable to prove his innocence, Vijay escapes from a police van and joins Roma. He learns that the diary was stolen by a man named Jasjit who is also chasing Deepu and Munni.

Jasjit meets Vijay and Roma and joins their effort. They discover that Malik is actually Vardhaan, who captured the real Malik and posed as him to hide his crimes. Vardhaan had murdered D'Silva during the party and had exposed Roma's identity to the gang to force their surrender.

Jasjit is captured by Vardhaan but escapes the hideout with Deepu and Munni. He thanks Vijay for looking after the children.

In the graveyard where Don was buried, Vardhaan and his gang hold Deepu and Munni hostage while Vijay, Roma, and Jasjit confront them. Vardhaan grabs the diary from Roma and throws it into a fire.

Vijay reveals that the diary thrown in the fire was a blank decoy and hands the real diary to Verma, exposing Vardhaan's identity. The police arrest Vardhaan and the gang, and Vijay, Roma, Jasjit, Deepu and Munni leave the police station together.