Karna Subarna'er Guptodhon, the third film of Guptodhon Establishment, brings back another exciting enterprise of Sona da, Abir & Jhinuk. Welcomed for a brilliant event, the trio's get-away before long turns into a perilous journey for the most noteworthy treasure of Bengal. As Sona Da will attempt to open each clue, his mind and intellect will continually get challenged, whereas his cherished ones will be put on parole and his whole enterprise will be beneath a web of dangers until he uncovers one of the most noteworthy treasures that Bengal has ever known.
