Kumar discovers a puzzle engraved in a human skull. The skull was stored by his grandfather long ago. Unable to solve the puzzle he consults with his close friend Bimal to find out the secret behind it. Bimal is adventurous and also a professor of Anthropometry. They solve the puzzle and realise that this is nothing but a clue of hidden Tibetan treasure which is concealed in an undisclosed spot in a dense jungles of Neora Valley. By this time Bimal's elder brother, Hiranmoy is Kidnapped by some unknown group. Bimal and Kumar together start an adventure to recover the treasure and rescue Hiranmoy but one Karali is also in a hunt for this treasure. Karali is ruthless and dare to capture it at any cost.