Do Jasoos

Dharamchand and Karamchand are two detectives who are sunk in debts due to lack of work. One day they get a call from a rich businessman, who hires them for finding his lost daughter, Hema. However, he breaks his glasses and provides them with the photograph of his daughter's friend, Pinky.

Pinky lives with her widowed mother and is in love with Ashok, the son of a journalist, who had been instrumental in the arrest of a smuggler, Prem Chopra. Prem's father had wronged Pinky's father in the past and in remorse, named Pinky his heir before his death. Prem comes out of jail and murders Ashok's father. Pinky becomes eye-witness to the murder and tries to flee from Prem, who on one hand wants to marry her for his father's property and on the other hand, wants to kill her. Dharamchand and Karamchand save Pinky a number of times, thinking her to be Hema. However, on learning the truth, they decide to protect Pinky from the clutches of Prem's gang. In the end, they are successful in busting the entire smuggling racket and also two other rackets of fake currency and prostitution.