Several murders have taken place throughout Kolkata, for which a serial killer is believed responsible. The murderer strikes in accordance with verses of Bengali poetry, which he leaves next to the victims. The police are baffled; chief detective Abhijit Pakrashi (Parambrata Chatterjee) struggles to solve the case, which takes a toll on his relationship with girlfriend Amrita Mukherjee (Raima Sen). Pakrashi's superior (Rajesh Sharma (actor)) brings back an ex-cop, Prabir (Prosenjit Chatterjee), to help solve the case. Prabir, earlier suspended for his violent methods, is notoriously ill-tempered and foul-mouthed. Prabir and Pakrashi work together, while Amrita (a television journalist) and colleague Surya Sinha (Abir Chatterjee) research serial killers for a series whose thirteenth-and-final episode will be about a contemporary murderer. Meanwhile, eccentric poet Nibaron Chakraborty (Gautam Ghosh)—who considers himself part of the Hungry Generation—wanders Kolkata at night reciting poems.