Starring Sujoy Ghosh as detective Byomkesh Bakshi, this is the last movie by director Rituparno Ghosh. To inherit his father's kingdom, prince Himangshu marries an unknown girl, Alaka, as per his father's dying wish. But when the palace librarian Harinath, who was befriended by the new bride goes missing, Himangshu invites Byomkesh to uncover the truth behind his disappearance.