The city of Durgapur was rocked by a series of unnatural deaths after consuming vitamin capsules of the same brand, but the victims had no connection to each other. The case remained unsolved for several months due to a lack of evidence until one journalist uncovered a crucial clue.
Kolkata police detective Aniket Sanyal (Kharaj) guess on a holiday to Kasuli in Himachal Pradesh after his wife's death, only to be sought out to solve the mystery behind the well-planned murder of another tourist.
Anirban is a professor who lives in Delhi with his wife Tanu and daughter Zinia. He is transferred to a lonely town named Kasauli. They enjoy a lot in the new city but their neighbors are mysterious. One day, their daughter Zinia goes missing during an excursion. Anirban and Tanu enquire and come to know that Zinia's friends didn't even accompany her.
