Crayon Shin-chan: Mononoke Ninja Chinpūden

One day, a woman named Chiyome Hesogakure with a child named Chinzo visits the Nohara family and claims that she is the real mother of Shinnosuke and takes him away to a Ninja Village. In the Ninja Village, the Hesogakure family has been protecting the earth's navel by blocking it with a pure gold stopper using the Mononoke technique that has been passed down from generation. If it comes off, the earth will wither, the rotation will stop, and the tomorrow of the world will be lost! It is up to Shinnosuke to reveal the mystery of his birth and protect the future of the earth and the tomorrow of his family.