Kumar (Sunil Dutt) is a well-known stage actor in Bombay. While on a trip to scenic Darjeeling, he meets with and falls in love with, Meena (Vimmi), the only daughter of wealthy military contractor, Verma (Manmohan Krishna). Shortly thereafter Kumar and Meena get married and return home to Bombay. Four years later Meena's dad passes away after telling her something that he had hidden from her for four years. Then a year later, Kumar notices that Meena does not accompany him to the stage anymore, and excuses herself on the pretext of being ill. Shortly thereafter, Meena gets killed, the Police assign this case of Inspector Ashok (Balraj Sahni) who starts his investigation - which will reveal that Meena was meeting secretly with Captain Mahendra (Anwar Hussain); had been married to Captain Rajesh (Raaj Kumar), and has a daughter by the name of Sarika in an orphanage. All Ashok knows is that the primary suspect is a bearded man by the name of S.N. Sinha who was lurking near Meena's residence on the night of the murder...