The story revolves around a retired judge, Mr. Nishanath Sen, who stays at a farm house called Golap Colony (The Rose Colony) at the outskirts of Calcutta. The people who stay in the colony are a strange melee of handicaps, social outcasts and ex-convicts. One day the judge is murdered under mysterious circumstances. The local police assign Byomkesh to the investigation. As a close acquaintance of Sen, Byomkesh is more than willing to solve the murder mystery. Through many twists and turns in the story, he goes on to solve the mystery.

火车上，一名退休律师古鲁帕达·米特携小女儿布奇珂一道，从圣城瓦拉纳西朝圣回西孟加拉邦。他们偶遇了比林基巴巴和他的助手，比林基巴巴自称是不老的，能够呼天唤日。他教会了爱因斯坦相对论：E=mc2。古鲁帕达·米特被深深折服，拜巴巴为师，并约巴巴到他家授课。
同村的萨提亚一直暗恋着布奇珂，因为害怕布奇珂也拜巴巴为师西去，所以联合三个好友，尼塔伊、尼巴兰、帕拉克一起，决定拆穿巴巴的鬼把戏……