This is an adventure story of the fictional genius scientist and inventor Professor Shonku visiting the heart of the Amazon forests in search of the mythical city of El Dorado.

Shanku realises that Nakur Babu has supernatural power having the ability to read others' minds and see the future.

Seeing his extrasensory power, an amazed Shonku goes to Brazil with Nakur Babu to join a science conference and the mystery begins ending in the fabled city of El Dorado deep inside the Brazilian Amazon[7][8] The Times of India gave the film 3 stars out of five and said, "Despite a perfect look and sharp glances, Dhritiman remains less convincing as Shonku.

"[11] Firstpost gave the film 3 stars out of five and said,"One of the distinguishing features of anything Satyajit Ray has ever written is the conciseness of it all.

Each page, each sentence is loaded with information, and often as the story progressed, a certain sense of urgency crept in.