A Gold Pen with a 10 carat diamond was presented to a zaminder by Lord Curzon in 1905 as a token of appreciation for saving his life. This is the pen Lord Curzon used to sign "Partition of Bengal" in 1905. The Pen was kept in a secured place and was never found for more than 100 years. Recently a newspaper article brought the story of the historic and expensive pen on the surface right before the Durga Puja. A young girl, an armature detective Papu (Poulomi Das), Papu's boy friend Tutu (Saheb Bhattacharya), two bad guys Monohar and Gunodhar (Kharaj Mukherjee and Kanchan Mallick), a person lives in the house Gobu (Sumit Samaddar), and Jatamama (Paran Bandopadhyay) all trying to solve two puzzles known for more than 100 years to find the pen on the final day of the puja - Dashami.