'The treasure of Karnasubarna') is an Indian Bengali adventure thriller film directed by Dhrubo Banerjee and produced by Shrikant Mohta and Mahendra Soni.

Invited for a wonderful occasion, the trio, Subarna Sen aka Sona Da, Abir and Jhinuk, discover an old riddle and follow a perilous trail to find the hidden treasure of King Shashanka.

As they face resistance from an old foe and their lives are put in peril, the quest for the greatest treasure becomes a dangerous hunt for power and wealth.

As Sona Da tries to unlock every clue and crack the riddle, his mind constantly gets challenged and his loved ones face threats.

[6] It simultaneously released in cities like Bengaluru, Delhi, Guwahati, Tezpur, Mumbai and other parts of India including Kolkata and entire West Bengal.