Previously, Feluda was played by Soumitra Chatterjee in two films Sonar Kella (1974) and Joi Baba Felunath (1979), directed by Satyajit Ray.

[1][2][3][4][5] Lalmohan Ganguly, alias Jatayu − Friend of Feluda − gets invited to Mumbai (previously Bombay) to watch the shooting of a film based on a novel written by him, Bombaiyer Bombete.

Feluda and team check in a hotel, where they are told by Pulak about the murder, and the trio meet inspector Patwardhan (Anjan Srivastav).

Inspector Patwardhan tells them that a necklace of Nana Sahib has been stolen from Nepal and that it may be smuggled in India by unknown smugglers.

Pulak Ghoshal the director further introduces them to Victor Perumal (Rajesh Sharma), a martial artist from Japan, who is the stunt coordinator for the film.

Things turn mysterious when the trio get attacked multiple times by unknown men, forcing Feluda to open the brown packet of Sanyal after realizing Jatayu's parcel swap.

Along with the mysterious man from the airport (called Nimmo) brandishing a gun, Sanyal asks Feluda to hand him the book, which he gladly does, but finds something missing there.

It is now revealed that Nana Sahib's necklace was inside the book, and Sanyal is the kingpin of a smuggling mafia operating in Mumbai.