Thriller Writer Prakash had been murdered mysteriously in his own house just 2 days after the publication of his recent story in a local magazine. A flower bouquet was found from that same room which finally took the CID cops to that lady Rima who bought that bouquet for Prakash that night. She was Prakash's colleague & also in a relationship with him, though dismissing all allegation of murdering Prakash. Autopsy report proved that alcoholic Prakash had consumed an anti-allergic medicine named Suprazl-400, following by a few pegs of alcohol, both reacted dangerously leading to his demise. The Magazine editor Sekhar informed the cops that surprisingly Prakash had been killed almost in the same way how the victim was murdered in his recent thriller story published in that magazine. Cops asked the editor to release a special edition of his magazine on the very next day just to bring back those thousands of readers, so that the Cops could interrogate them to find out the real killer. Next day Rima was found dead on the roadside as a car had hit her badly, no eye-witnesses there. A young businessman Arnav Roy Choudhury came to the CID bureau after reading that special edition issue of that magazine, who revealed about his family history which was somehow related with Prakash's death, as 20 years back Arnab's grandfather Haricharan Roy Choudhury was murdered in the same way how Prakash had been killed recently. Reaching at Roy Choudhury house, Cops found out Arnav's uncle- Amolendu's photograph from a family photo-frame. Cops remembered him as they had already met this person in recent times, so by providing his phone number to Arnav's father Nishikant, the cops requested him to call his cousin back at Roy Choudhury house after long time to reunite with the family during this auspicious occasion of Durga-puja. Amolendu stepped into that trap created by the cops, he came at Roy Choudhury house, & after a small chase finally CID cops grabbed the real culprit Amolendu, also known as the Magazine editor- Sekhar who ultimately confessed that it was him only who had killed his uncle Haricharan 20 years back to get his property sharing & then also murdered Prakash & Rima in recent times as being freaked out with that story written by Prakash, as coincidently that story depicted the same procedure used by him to kill Haricharan 20 years ago.