One day at the station, a mysterious man appears at the scene of a crime. The mystery man is a detective named "blue pegasus" . The detective asks the three men present if they have seen the woman at the crime scene. The three men tell the detective that they have not. When the detective asks if the woman has been drinking, the men tell him that she has been. When asked if she has a special bottle of perfume that she is planning to drink later, they all say that she does not have such a bottle. The men then tell the story of how the woman had gone to a bar called "Ichiya" and bought a bottle of "high-grade perfume liquor" , which she then returned to her station in a drunken stupor.