Rehan (Mahakshay Chakraborty) is sent to a mansion by his father who is in the real estate business. The mansion is being sold to a family in 10 days and there has been the death of a caretaker a few days ago. Rehan's father suspects this as the doing of their rival so he sends Rehan to investigate. He meets a rag picker on the way who tells him that only he can do it. Mysterious things happen at night. He sees a girl playing piano, who vanishes when the door is opened. Then a book drops from the bookshelf on its own and Rehan finds a letter inside. The letter, written by Meera (Tia Bajpai), tells her story from 1936 when her parents left for Delhi which resulted in her being left alone with her nanny, Margaret(Achint Kaur), a servant and a driver. In the absence of her parents, her Piano teacher Iyer( Arif Zakaria), tried to rape her. However she saved herself by hitting Iyer with a candle stand on his head, which resulted in his death.