The film which is based on the life on an Indian scientist Shivkar Bapuji Talpade, who is credited to have constructed India's first unmanned plane is the tale of the hardships that he went through on the journey to discover. Also the film is set in the pre-independence era of Bombay of 1895.

Dashrath Manjhi was a poor man from the lowest of the low castes, living in a remote village cut off from the world by a rocky mountain range. Life for him was a daily struggle for survival. He loved his wife, Phaguniya, beyond belief. One day, while climbing the mountain to bring him food, his wife slipped, fell and died. Overwhelmed by grief, Dashrath decided to carve out a path through the mountain, so that no one else would suffer his fate. For 22 years, all by himself, with just a hammer and a chisel, he hammered away at the rocks, till the path was carved out from the mountain. Written by Ketan Mehta