Feluda meets a man named Mr. Dhar. Dhar asks Feluda to help save his son from the bad men, Mandar Bose and The fake Hajra. The real Hajra had been knocked of a height by Mr. Bose. Feluda meets the fake Dr. Hajra. A message from the fake tells Feluda to investigate, as it has a name mispronounced. Feluda captivates The fake Hajra and makes friends with the real Dr. Hajra.