A powerful gangster named Don (Amitabh Bachchan) flees the cops and is killed during a showdown with Officer D'Silva (Iftekhar). Hoping to crack down on the remainder of Don's gang, D'Silva convinces a man named Vijay (also Bachchan), who is the spitting image of Don, to assume Don's identity and go undercover to bust Don's gang. But then D'Silva gets killed, and everyone from the gangsters to the cops think Vijay is Don. If he can't convince them otherwise, it may prove fatal. Wikipedia
A powerful gangster named Don (Amitabh Bachchan) flees the cops and is killed during a showdown with Officer D'Silva (Iftekhar). Hoping to crack down on the remainder of Don's gang, D'Silva convinces a man named Vijay (also Bachchan), who is the spitting image of Don, to assume Don's identity and go undercover to bust Don's gang. But then D'Silva...