Gajamathi is an immigrant worker from Bihar, who lives in a small shack in the construction building along with her mother Shanthi and her three-year-old daughter Bijli. As fate would have its indifferent course, Bijli goes missing from the construction site. Relentless, Gajamati along with her mother and the kind hearted site foreman Murugan go on a crusade to find and bring Bijli back to her home.