A second moon suddenly appears in the night sky! This second moon is getting closer and closer to earth and over Tokyo Bay. Meanwhile, the 808 Tanuki that were supposed to have been sealed over 200 years ago awaken. They jack the airwaves and declare that the Japanese government hand over their control to them. Mana is caught and labeled a traitor by the Tanuki after attempting to seek help from Kitarō. In order to rescue Mana, Kitarō heads to the large underground space where the Tanuki are lurking. At the same time, the Japanese government shot down the second moon by using a missile. The large object that fell into Tokyo Bay was actually a Yōkai egg! Can Kitarō thwart the 808 Tanuki's plans!?