Conan, Ran, and Kogoro take a trip to a hot springs lodge. One of the guests, Harumi, asks Kogoro to investigate a case from five years ago. Her friend had been accused of selling drugs, and as a result committed suicide. Harumi knows that her friend was innocent and believes that two of the other guests there were the real culprits. The two women are found murdered, but in both cases it's a locked room case and it resembles the legendary curse of the goddess of vengeance. Ema is murdered in a shrine with Long Sleeve Kimonos lying around her while Asuka is found murdered in the women's hot spring surrounded by Obis.