Sujata, Kaushik and Nayan Samanta become prime suspects in the murder case of Ketan Agarwal. As Advocate PK Basu delves deeper into the case, his own life falls in danger.

While the judge and lawyer involved in the Agarwal case meet unexpected circumstances, Officer Ramen Guha tries to identify the sole witness. PK Basu and his wife travel to Darjeeling.

Officer Guha’s team gets attacked while investigating a hideout, leaving their only lead murdered. PK and Rani encounter several mysterious figures in Darjeeling, including someone from their past.

PK and Rani are haunted by their daughter’s memories. They feel there is a sinister plot behind her sudden death. Officer Guha and the intel in Kolkata discuss the killer’s whereabouts in Darjeeling.

PK, Rani and Officer Ghoshal join hands to investigate the possibility of foul play in the case. Suspecting Neena, they try to track her down. Meanwhile, the killer strikes again!

PK and Rani hurry to safeguard their friends, Sujata and Kaushik, from the killer’s sinister plot. Sujata and Kaushik are trapped in Hotel Repose with a power cut and storm with a mysterious stranger.