A newspaper editor, Shrivastav, is killed when he was about to expose the underworld links of a very rich and influential person. He calls over his friend, Inspector Shekhar, to talk to him about the threat he receives from the underworld. Srivastav dies by the time Shekhar arrives. He remembers that he saw a suspicious person by the elevator and borrows a lady’s car to chase him. The lady (Shakila) throws a fit (and even throws the car keys in the mud when it is raining outside) and they lose the chase. In the morning the two return home when they find the keys. Meanwhile, on the crime scene, petty pickpocket Master (Johnny Walker) is found at scene and confesses seeing the whole murder. Shekhar uncovers some of the gang, and Master identifies the killer (Mehmood) who is put in jail.
Meanwhile, the lady, Rekha, turns out to be the daughter of Chief of Police (K N Singh), and trust is formed. Shekhar is taken to the criminal’s house in an attempt to bribe him to release the prisoner, but the attempt fails. The person who offers the bribe is Kamini (Waheeda Rehman). She spikes the drink offered to Shekhar, intoxicates him, and the gang leaves him on the street. He is found by Rekha, who brings him home. At Rekha’s birthday party, Shekhar sees Kamini and follows her. Kamini turns out to be a childhood friend of Rekha. The mastermind, Dharamdas, now wants to incriminate Shekhar so that he can be clear of any fear. They take Master to a house and try to persuade him but fail. The gang kills the original killer by sending their people to jail and frame Shekhar for it. This puts the blame on Shekhar for the two murders. He goes to trial and waits for the verdict the next day. By this point, romantic feelings have grown between Rekha and Shekhar. They talk, and Shekhar does not know what to do. He is persuaded by Master to run away, knowing that he will have to prove who the real killer is by getting a chance to investigate.