Benimadhab is a retired businessman who made a lot of money as an army contractor. But, his personal life is full of setbacks. He has given shelter to his son, who does not earn a penny, his daughter whose husband is jobless, and his two nephews who work small-time. He and his servant Meghraj carry on with a dull life. Meanwhile, famous detective Byomkesh is also living a content life with his newly born child, his wife Satyabati, and dearest friend Ajit. Byomkesh gets a call from police who is seeking help in a case where Benimadhab and Meghraj are found dead. Byomkesh delves deep into the darker sides of the characters in that family where each of them has secrets. He investigates two murders and comes up with intriguing results, everything and everyone is not as it seems.