The plot is based on the life and contribution of Binoy, Badal and Dinesh, revolutionary trio. On 8 December 1930 they entered into the Writers' Building, British India Secretariat of Bengal at B. B. D. Bagh to assassinate the infamous British Inspector General N.S. Simpson.[9]
In their review Cinestaan gave the film three stars from five, praising the direction, writing, and cinematic finesse while criticising the overpowering heavy metal soundtrack and a few over-the top performances. The reviewer considered: "Gopi Bhagat’s experienced camerawork and editor Sanglap Bhowmick’s fine trimming of the scenes make 8/12 one of the better Bengali period films made in recent times."[11] Jani News gave the film a positive review, praising the direction, acting and cinematography. The reviewer stated: "The way director Arun Roy presents the forty minutes of armed struggle in a very restrained manner, with beautiful choreography in just 12/13 minutes, has probably never been seen in a Bengali film before."[12] Ananda Bazaar also gave a positive review, praising the acting and direction while criticising the music and pacing of the story.[13]