Biresh Bose works in a big company, who gives loan for new business. Biresh prepares the investigation report on which the loans are sanctioned. The company has provieded him a pull car and he gets a handsome salary. He is a regular drinker. He visits the bar every evening. One such evening he met Nita, a hooker. After that Biresh starts visiting Nita's apartment regularly and gradually he started feeling peculiar attraction for Nita. Biresh had a friend name Hiren. Hiren is an artist. He lives in with his model Iti. One evening Hiren takes Biresh to Sonagachi brothel. There Biresh came to know that Hiren was a regular visitor of that area. Haralal Bhattacharya, an NRI, applied for a loan in Biresh's company. Biresh while investigating found that Haralal's claim was false. So in his report he stated that Haralal is not eligible for any loan. That ultimately creates problems in Biresh's life. Being an NRI, Haralal had an enormous connection in the upper level. So Biresh was asked by his superiors to change his investigation report, so that Haralal could get the loan. One day Iti visits Biresh's office and tells him that Hiren has left her. She needs Biresh's help. Biresh came to know that Hiren was a regular visitor to Nita's place these days. Biresh finds Haralal in disturbing not only his office life but also his personal life. Biresh kills Nita after visiting her in the bar and then Iti'a place. Police arrested him but could not prove him guilty. Iti told the police that when Nita was killed Biresh was in her apartment. everybody starts believing that Haralal might killed Nita. Biresh's company decided that not to give loan to Haralal. Life become smooth for Biresh again, but Nita still haunts him. So one day he calls the police and says he confessed about the murder of Nita.