This investigation of Feluda starts somewhat unexpectedly. While in a toy shop to buy a gift for an acquaintance, Feluda comes across a young fan by the name of Aniruddha Haldar, who asks him if he can find out his lost parrot. More to give the little boy some time than find his bird, Feluda agrees to look into the matter, and true to his word, visits him after a few days. However, things go wrong when Feluda and his companions visit the Haldar House. Aniruddha’s grandfather, an antiquities collector, is found dead, and his most prized collection – one of the last ever letters written by Napoleon Bonaparte – goes missing. The case of the parrot is forgotten as Feluda is asked to investigate the developments, but it soon becomes clear to the detective that neither of the two cases are less intriguing than, or perhaps different from, the other.