Erupting without warning to shatter the tranquility of the Japanese nightlife, an ominous pillar of darkness descends from the heavens. Two fearsome creatures proceed to annihilate the warships and attack aircraft that come to greet their arrival. Watching the transpiring events in amazement are Mary and Joe Hayakawa, two research scientists who would later make the first trip to the world beyond the pillar. A second trip to Wonderland would lead to their mysterious disappearance. Twins Ai and Yu seek out the hidden subway that leads to the mystifying world that lies beyond the dark column, in hopes of finding the whereabouts of their missing parents. Joining them on their journey is a woman named Lisa.