The film is a true story of the world’s youngest marathon runner, Budhia Singh. Born next to a railway track, sold at the age of 5 by his impoverished mother to a street hawker, he is rescued by the local judo coach, Biranchi Das. His prodigious talent for long-distance running is discovered accidentally by Biranchi and he embarks on a mission to turn Budhia into India’s first and world’s youngest marathon runner. Within a year, the remarkable 5-year-old runs 48 marathons. With the world’s eyes on them, opportunistic war brews between lawyers, child welfare, and the state politicians. Things are upended when the Child Welfare bans Budhia from running, accusing the coach of cruelty and takes custody of his newly adopted son. It''s a tale of an extraordinary talent and also of politics and child exploitation.