On their trip to Hazaribagh, Feluda and his comrades meet Pritin, Mahesh Babu's youngest son. Meanwhile, they learn that a tiger escapes from the Great Majectic Circus. Pritin invites the trio to their family picnic, where the main turn of events commence. On their trip to Hazaribagh, Feluda and his comrades meet Pritin, Mahesh Babu's youngest son. Meanwhile, they learn that a tiger escapes from the Great Majectic Circus. Pritin invites the trio to their family picnic, where the main turn of events commence.

Mahesh suffers a brain stroke and eventually passes away, assigning Feluda to solve his death mystery and the absence of Biren. While Feluda investigates the case, Topshe and Jatayu spots the missing tiger. Mahesh suffers a brain stroke and eventually passes away, assigning Feluda to solve his death mystery and the absence of Biren. While Feluda investigates the case, Topshe and Jatayu spots the missing tiger.

Feluda studies all the details about the case and discusses the same with his mates. Sankarlal visits them, asking them to stop the investigation. Feluda studies all the details about the case and discusses the same with his mates. Sankarlal visits them, asking them to stop the investigation.

Someone attacks Feluda, trying to steal something, but he has almost solved the mystery by this time. On returning Mahesh's belongings, he gets hold of another evidence which would break the case open. Meanwhile, the roaring tiger is suddenly tamed by a mystery man. Someone attacks Feluda, trying to steal something, but he has almost solved the mystery by this time. On returning Mahesh's belongings, he gets hold of another evidence which would break the case open. Meanwhile, the roaring tiger is suddenly tamed by a mystery man.

Feluda sits everyone down and reveals his findings. The entire riddle around Mahesh's death and Biren is decoded.