Osaka is gone, and Arumi and Sasshi find themselves in a world full of dragons and strange mythical creatures. All the familiar faces from back home are here, but with completely different personalities, and the two are suddenly enlisted to conquer an evil force.

Sasshi and Arumi thought for sure that they were going back home this time, but that`s just not to be. Instead, they find themselves in a prehistoric version of their home, complete with the usual cast of strange relatives that they have grown accustomed to seeing. But, they soon have more problems when they are on the run from the natives and trying to get a baby dinosaur back to his family.