A dying man's final clue—a key to Byomkesh Bakshi's locked secrets—forces his introspective son into a labyrinth of his father's shadowed past. As old cases bleed into a modern murder, Satyaki confronts a chilling truth: did the legendary detective bury justice to protect the innocent, or hide something unforgivable? One revelation could redefine everything he thought he knew about truth, legacy, and blood.