Amidst a political campaign to represent his people in a post-WWII British Government, a Punjabi community leader faces unexpected opposition from a member of his own flesh and blood.

Post WW2, the population of Punjabis in Great Britain had increased immensely. Regardless, the ethnicity faced prejudice and lacked representation. Baagh Singh, an altruistic Sikh, pursues a democratic path to represent his Punjabi community in the British Parliament. His compassion to enact change for equal judicial treatment gathers him support in the tight knitted Punjabi community of Leeds. His preparation of the upcoming election is however challenged by his nephew, Gurbaksh. A turmoil of distrust and anger stirs in the young novice, being weaponised by malicious members of the community, for whom Baagh is a threat. Gurbaksh, triggered by manipulative sentiments accuses his Baagh of being a sellout to the "gori sarkar" (British Government) and results to violence. The encounter tests Baagh's leadership and exposes the fractures within his family. 'A Grain Of Salt' pursues complexities of acting upon personal vendettas and distrust with a lack of conviction. Attending to the aftermath of such acts, the film delves into the entanglements in representing communal interests while grappling with dissent.