The people of Shikarpur are in shock as the town witnesses a spree of murders. Keshto, an aspiring detective, wants to take charge of the murder investigations. Will he succeed in finding the killer?

As more people are murdered, Keshto gets the opportunity to take a crack at the case. His theory is that there is more than one murderer. Is he correct?

Biman, the inspector, interrogates the suspects when more people are found dead in Shikarpur. Keshto continues his investigation separately. Meanwhile, a mysterious figure enters the Ghosh mansion.

Keshto comes under pressure as there is no progress in the investigation. A frightening figure called the 'pichla bhoot' attacks Keshto. Will he find the truth behind this?

Keshto finds an assistant and shifts the next probable victim to his house to keep him safe. Dindayal leads Keshto to an important person connected to the case. However, Biman finds evidence against Keshto.

Keshto gets arrested but manages to get bail. Meanwhile, Dindayal finds an address, and Keshto reaches to meet the probable culprit.

The case concludes as the killer is found. But Keshto has a feeling that something's amiss. Secrets and fake identities get revealed. Will Keshto find the missing piece of the puzzle at the right time?

Keshto and Boltu try to solve the case separately. While Keshto catches a suspect red-handed, Boltu finds an important clue. Will Keshto finally solve the mystery?