A group of Malay yōkai drift to Japan after the destruction of their homeland. Upon hearing this story, the Kitarō Family welcome Miminaga and the others to the GeGeGe Forest. Nezumi-Otoko is pleased after receiving their bag of jewels as rent. One day, a jewel begins to glow, and a young female witch by the name of Agnès appears. Before Kitarō was able to ask who she was, a man named Wolfgang appears. Trembling, Miminaga identifies Wolfgang as the one responsible for destroying their home and killing their friends. The Malay yōkai face Wolfgang, but are immediately killed. Angered, Kitarō and the others challenge him too, but...!