In opening episode of the series, Wonderland: Journey into the Darkness, a Pillar of Darkness appears in the Sea of Japan, where it can be seen from the shores all around. It serves as portal into Wonderland. Out of Pillar come two dragons, which do battle above the Japanese port of Sadogashima. Two scientists, Joe Hayakawa and his wife Marie Hayakawa enter the Pillar and explore the world of Wonderland. They return and publish their findings in a book that becomes world famous. The Interdimensional Train later serves as a portal between Earth and Wonderland.