Byomkesh meets Ajit for the first time when he puts up at a guest house under a different name to solve a case. One morning a man finds a dead body in the middle of the road. Ajit and Byomkesh rush to see it as it is lying near their house. This is the start of a new secret mission. When Ashwini Babu gets murdered inside the guest house, Byomkesh must play his final card to apprehend the killer before any more lives are lost.