The trio of Feluda, Jatayu, and Tapesh have been invited to Panihati to investigate the case of Jahangir's missing gold coin. The client, Shankar Prasad Mitra, had a collection of 12 gold coins but on his last birthday, one of them was stolen by one of his most trusted invites. He invites the same group this year and asks Feluda to catch the culprit while hiding his true identity.

Deepak and Anasuya are an estranged couple, now leading separate lives in Cuttack and Bombay. They meet again after 18 months of separation, at a small fishing village where they had once honeymooned.