The film opens in an old dilapidated home in the suburbs of Kolkata, with Upama, a 72-year old retired school teacher residing alone. She is estranged from her only son, Soumya, who lives separately with his wife, Moumita. Upama is shown to be bitter and reminisces the time spent with Soumya. The owner of a local NGO, played by Parambrata Chattopadhyay, introduces her to 7-year old orphan boy named Bitlu, and a bond begins to form between them. One day, Upama and Bitlu go missing and thus ensues an emotional journey for Soumya to find his mother and mend the distance between them.