The story is set in a Mumbai chawl and follows Mohan (Ravi Jadhav) and Shaila Katdare (Sonali Kulkarni). Their lives revolve entirely around their 15-year-old son, Bachchu (Manmeet Pem), who is mentally challenged.

"Kaccha Limbu" is not your typical Bollywood drama. It is a stark, black-and-white portrait of parental anguish, societal taboo, and the search for intimacy in the face of unrelenting adversity.