An elementary school student named Yūta hears stories about Kitarō from his neighbor, Mana, and finally ended up visiting the GeGeGe Forest. It was the first time in a few hundred years that a human last wandered into the forest. Kitarō tried to return the boy back to the human world but was urged by his father and Sunakake-Babaa to show Yūta around the forest. He unwillingly obliged, along with Neko-Musume. Yūta, who is familiar with yōkai, is delighted when he gets to meet various yōkai on his tour. However, the state of the forest suddenly changes! One after another, Kitarō and his friends get attacked. Medama-Oyaji says that Yūta is the cause...!?