Feluda real name Pradosh C. Mitter is a Private Investigator accompanied by his cousin Tapesh are Investigating some Mystery related In Bangladesh and Kolkata . It came a Adventurous Journey they face .
The astute detective and his trusty sidekick sets out to investigate for a client, an elderly researcher who needs to protect his invention from unknown intruders.
Feluda and Topshe visit Gangtok for the summer holidays. They meet Sasadhar Bose, who learns about a cliff-dwelling accident involving a taxi and his partner Shivakumar Shelvankar. Bose leaves for Mumbai.