After the massive success of the first treasure hunt venture, ‘Guptodhoner Sondhane’ Dhrubo Banerjee is back with the second installment of this series. Professor Subarna Sen, aka Sona Da (Abir) a professor of history, along with Abir (Arjun) & Jhinuk (Ishaa) decide to visit one of Sona da’s students’ ancestral mansion in Durgeshgor. The great grandfather of this student was an erstwhile zamindar and a renowned artist of Bengal. There is a myth that runs in the family that they had once received a massive treasure, but all traces and trails of it had been lost. As Sona da, Abir and Jhinuk join the festivities at the mansion in Durgeshgor, they stumble upon the lost clues that might lead towards unearthing one of the greatest treasures of Bengal!