Deeply affected by an abusive father and death of his mother, Sultan runs away from home and arrives in Calcutta to begin a new life, he starts earning money by doing small jobs. Sultan meets a man who takes him and raises him like a son. Sultan is a professional assassin and is given a contract to assassinate Judge Rudro Chowdhury, who is a very influential person in political arena. After failing at the first attempt, Sultan enters the palace under the disguise of a gardener, and slowly wins over the trust of all household members and tries to use that advantage to assassinate the Judge while Chutki starts to develop feelings for him by Shikari Bangali.
A collaborative Jaaz-Eskay project involving Khan was first reported during mid 2014. However, the project was later shelved due to unavailability of actor. Due to numerous media reports, the film was originally planned to be a multi-starrer film. Eskay Movies & Jaaz Multimedia intended to begin production of the film again after revisions in the script of the film. The production was officially announced by Eskay Movies & Jaaz Multimedia in January 2016, and Zakir Hossain Simanto and Joydip Mukherjee was hired as directors. The film is produced by Ashok Dhanuka & Abdul Aziz, under the production Eskay Movies & Jaaz Multimedia. A few percent of the film and songs were shot in London, UK. The film was released in Bangladesh on 7 July 2016. It became the highest-grossing Bengali film of 2016. Shakib Khan won his eight Meril Prothom Alo Awards for this film.
Shikari Bangali (Shakib Khan) is a professional assassin who had run away from home in his childhood after being convicted of attempting to murder his father. Rahul Dev, an influential child trafficker hires Sultan to kill prominent Judge Rudro Chowdhury (Sabyasachi Chatterjee), since he is handling the inquiry and verdict on Rahul Dev’s child trafficking case in Kolkata. Sultan arrives in Kolkata and attempts to murder Judge Chowdhury by sniping, but misfires due to large crowd and media around the Judge. The West Bengal police force chases after him, but ultimately fails to catch him. After Rahul Dev insults him for his inability, Sultan is angry with himself, and vows to kill Judge Chowdhury within ten days Shikari Bangali.
Sultan enters Judge Chowdhury’s household disguising as a servant, and slowly begins to win over the members of the family.