Prof. Ajay Saxena, played by Jeetendra, is a common man with a strong streak of honesty, who arrives in the city of Mumbai, and joins as a Psychology professor in a college run by Mahendra Khanna, played by Navin Nischol. One day he berates a student Jaggi aka Jagdish, for his unruly behavior, unknowingly that Jaggi was the nephew of Ramniklal and Mahesh Shah, who controled the drug trade in the city, under the protection of a Don Daya Patil alias Mohan Joshi. Ajay stays as a paying guest with Mrs. DSa whose son Johnny is an ideal student for him. Jaggi takes his revenge by turning Johnny into a drug addict and getting him killed by a drug overdose. Then the entire locality is witness to the slit throat gory murder of Mrs. DSa on the crime infested Mumbai streets, by gangster Daya Patil. Ajay cannot do anything and loses his hope in the due process of law, though his ex-student Inspector Rahul Singh alias Rahul Roy, keeps assuring him to the contrary.