Shyam is a small-time thief who works as a security guard at a museum. He devises a plan with his three friends: Johnny, Titu and Tony to steal a particular Nizam diamond. The foursome successfully manages to steal the diamond only for Shyam to double-cross Titu and Tony. Johnny and Shyam escape with the diamond. Johnny escapes but Shyam is apprehended, before which he hides the diamond in an air duct of a dilapidated building. Shyam is sentenced for 2 years in prison.
