Satyajit Ray's creation Feluda travels to Mumbai with his nephew Topshe to witness a film being made on a story written by their author-friend Lalmohan Ganguly under his pen-name Jatayu. Trouble follows them.

Lalmohan Ganguly's Book Bombaiyer Bombete is made into a Hindi feature film. Thus Feluda, Lalmohanbabu and Topshe goes to Mumbai. Soon a murder takes place in Mumbai. Can Feluda solve the mystery of the mysterious person named Sanyal and a dangerous smuggling gang?