Busy scouting for locations in the city for his next movie "Detective Byomkesh Bakshi", Dibakar Banerjee Tuesday stated that the film will be the toughest venture of his life.

"There is a plethora of challenges... it will be tremendously challenging to recreate the Calcutta of 1942, and I know it will be the toughest film of my life, " Banerjee told mediapersons here.

"This will be the greatest challenge and after filming this I won't be able to take up another challenge for quite some time, " he said.

The film is based on one of the 33 crime thrillers penned by famed Bengali writer Sharadindu Bandopadhyay with Byomkesh Bakshi as the protagonist between 1932 and 1970. However, the director declined to reveal the name of the specific novel on which the film is based.

Featuring Sushant Singh Rajput of "Kai Po Che!" fame as the popular detective, the movie will be set in war-torn Kolkata (then Calcutta) of 1942.

It will follow one of the first cases solved by a twenty-something Byomkesh, fresh out of college, and "an adventurous, young, and thrill-loving youth who wants to be a detective".

Banerjee clarified that the movie, unlike his previous films "Shanghai" and "Khosla Ka Ghosla" will have no message to convey to the audience.

"This will be a long-standing dream come true. This time I am just telling a story... it has no message, " he said.