This family-oriented mystery revolves around Mridul, a young man who returns to his ancestral home, after spending nearly a decade abroad. The last 10 years had been very difficult for him as he could barely make ends meet in London, due to his inability to keep a job for any length of time. His elder brother Protul was taking care of him for 8 years, but the last two years saw Mridul in a disastrous state. His only source of income was playing the flute in the houses of the wealthy and famous.
So, Mridul comes back to sell off his ancestral home and with the substantial amount he hopes to go back to London, pay off his debts and start a business.
His ancestral house is a sprawling mansion but it is deserted as his parents and elderly paternal uncle are all dead. The house is looked after by Haraprassana, the retired head master of the local school, who was very closely associated with Mridul's family from early days. Haraprossana has a daughter Lakshmi, who is the unwed mother of a child. Lakshmi at present has a love-hate relationship with Dinu, who is very close to the family, but they both know that the relationship has no future.
Mridul comes back and a memory of his early life comes back to him and with that comes dreams of a love life with his childhood friend Neepa, who used to call him Banshiwala. Mridul embarks on an investigation into the paternity of Lakshmi's child. What will his investigation reveal? Delving deep into his own family's history and his own childhood memories, the answers to his questions may change his life forever.