Handlung

Don, a wanted criminal, dies in a police chase. DSP D'Silva is the only one who knows about his death, and to get hold of the gang he trains Don-lookalike Vijay. But Vijay faces danger from the police and from within the gang.

A ruthless gangster named Don is killed during a scuffle with the police. Since only DSP Desilva knows of this incident, he recruits another person named Vijay who is a spitting image of Don. Vijay is planted in Don's place in Don's gang and DeSilva has a plan to nab the entire gang in this way. But when Desilva dies during a raid, the secret that Vijay is not Don is also buried with him. Now Vijay is on the run - from the police and the criminal gang - and has to find the last piece of evidence to prove his real identity before it is too late.—Soumitra

Don (Amitabh Bachchan) is the leader of an underworld gang until Police Officer D'Silva (Iftekhar) tracks him down and in an attempt to catch him ends up killing him. But Don's death is only known to D'Silva. So Officer D'Silva tracks down a lookalike of Don named Vijay. Vijay impersonates Don to take down the rest of Don's gang while the DSP promises him that he will give a proper education to his wards who are actually the children of Jasjit (Pran). Meanwhile, Jasjit comes out of prison after serving his term, only to find Officer D'Silva having a red diary that would show Vijay's true identity. Officer D'Silva is killed by Malik who is introduced as the Interpol officer, but is in fact the real king of the underworld. It's now a race to retrieve the diary in which the DSP has documented the substitution of the real Don with the innocent Vijay.—gavin@sunny_deol2009@yahoo.com

When a criminal named Don is killed in an encounter with the police; the DSP D'Silva recruits a street-wise performer also the look-alike of Don, Vijay to play the role of Don; he teaches Vijay the mannerism and etiquette of Don and inducts him into Don's underworld gang so that he can accurately informs the police about the gang future plans and pin-point their colleagues. To this extent everything is going according to the plan but things started to go hay-wild when the DSP is killed with Vijay being a suspect - both by the police and the gang.—gavin (racktoo@hotmail.com)

When ruthless Don (Amitabh Bachchan) is killed by the police, the DSP (Iftekhar) is afraid that another "Don" will take over when the rest of the gang come of know of his death, so he, unbeknown to the rest of the police force, recruits Don's look-alike Vijay (also Amitabh Bachchan) to become the real Don. Vijay is, at first reluctant, but when promised that two children he is caring for, will be looked after and educated, he agrees. He is successfully re-located back with his gang by feigning injuries, and loss of memory. He soon recuperates. Then fate takes an unexpected turn when the DSP is killed and Vijay becomes the suspect; his role as the Don ends, as his gang comes to know he is a fraud; Vijay must run for his life - both from the police and Don's gang - for his life, and the life of the two children.—rAjOo (gunwanti@hotmail.com)

Don begins, true to its title, as the story of one of the most powerful men in the business of crime, who in spite of being one of the most wanted on the list of Interpol, remains elusive to the police. Along with the police, Don makes a few other enemies through his merciless approach to running his organization, especially when he kills one of his own men, Ramesh, when Ramesh decides to leave the business. This introduces Don to two new enemies, Kamini (Helen), Ramesh's fiancee, and Roma, (Zeenat Aman) Ramesh's sister. When Kamini seduces Don and attempts to have the police arrest him, her plan backfires as Don outsmarts her and the police in his escape, and in the process Kamini loses her life.

A shattered, revenge-seeking Roma gets her hair cut short, trains in judo and karate, then enters Don's gang after deceiving them into thinking that she too is on the wrong side of the law. Don is impressed with her fighting skills and allows her to work for him, without realizing her true intentions. Meanwhile, after a couple of unsuccessful attempts at nabbing Don, the police finally succeed, but Don dies during the pursuit, botching Officer D'Silva's plan to reach the source of all crime-the man Don reported to-through capturing Don alive. D'Silva buries Don's body, ensuring that people believe that he may still be alive. As luck would have it, D'Silva remembers his chance encounter with Vijay (Amitabh Bachchan), a simpleton trying to survive in the hustle and bustle of Bombay in order to support two small foster children, who is an exact lookalike of Don. D'Silva hatches a plan to transform Vijay into Don and place him back into the crime nexus, but this time as a police informer.

Around the time Vijay "returns" to Don's gang as Don under the guise of amnesia, Jasjit (Pran), just released from jail, begins his mission of revenge against D'Silva and his search for his children Deepu and Muni, who had been saved and taken care of by Vijay. Vijay manages to replace the red diary with a blank one, and tells his gang that he is going to take revenge on the DSP, but is actually going there to give him the red diary. Roma goes after him, but Vijay survives the attack and he tries to explain to her that he is not Don, but Vijay. She refuses to believe him at first but D'Silva intervenes and tells her that the man she is trying to kill is indeed Vijay.

Meanwhile, as Vijay learns more and more about Don through his discovery of his diary and Roma's help, he announces to his colleagues that his memory is back. Celebrations ensue, as Don announces his return to the world, but things take a drastic turn when the police raid the celebrations, acting upon Vijay's information, but Vijay's only witness to his true identity, D'Silva, dies in the crossfire.

Tangled in a web of confusion where the police refuse to believe that he is Vijay, whereas his underworld gang realizes that he is indeed not Don, Vijay becomes not only hated by the police, but also by Don's right-hand man, Narang, and the rest of his gang. To add to Vijay's woes, Don's diary which he had handed over to D'Silva - his last hope of proving his innocence - is stolen by Jasjit in an attempt to track down his lost children, without realizing that Vijay is the one man who can reunite them. Vijay escapes the clutches of the police and the underworld with Roma's help and returns to his old self though he struggles to prove his identity and innocence. After a long fight of Vijay against Vardan's men Roma ends up getting the diary and one of the gangster's snatch it and burn it. The ending reveals that the diary which was burnt was, in fact, the fake diary and Vijay had the real one in order to trick Vardan, he gives the proof to the police and all charges are put against him, Vardan is arrested and Vijay returns to his old life.