Rahmat, a middle-aged Afghan man, whose heart overflows with fatherly love for a little girl Mini, in the bustling city of Calcutta set in the year of 1965.
Joy lives in London with his daughter. He wants his parents to stay with them in London, but his father, who runs a hotel in Kolkata, refuses to go to London.
Following a shocking high-profile murder with several eyewitnesses, the only suspect in the seemingly open-and-shut case turns to Achinta Aich, a notary lawyer with few resources. As Achinta risks his all in a quest for justice, he uncovers a web of secrets and sins that hold the key to the truth.