Arghya Sen who takes Mrinmoy's son Amartya's art classes, visits their house when the mystery unfolds. On his arrival, he learns that not only has Mrinmoy been killed, but Kaberi Bhattacharya, Mrinmoy's beautiful sister, is also missing.

The film narrates a story of three individuals: Anirban Gupta, a professor, Ira, Anirban's wife, works as a hotel lobby manager, and Rudrangshu (Rudy), Anirban's childhood friend.

Twelve jury members debate fiercely over a murder trial. Only one juror is convinced that the convict is not guilty of the crime and he tries to convince the rest that the boy is innocent.

Keshto, a small-time detective, is determined to solve murders that are spreading terror in the hill town of Shikarpur. Will he catch the killer in time?