[1] The now-defunct Studio Kaab went on to animate the series Nalong, the flying squirrel from Spheres.

[1] Unbeknownst to human history, the Kingdom of Spheres existed upon Earth long ago.

Unfortunately, like most other civilizations, as the gap widened more and more between the social classes, the Kingdom of Spheres was troubled by those greedy for power; and in the end it collapsed.

One day Asten, the chairman of Sphere Union, who has a burning ambition to control the world, sent his followers to keep watch on Na Yeon.

Na Yeon and her friends try to keep three artifacts, the keys to conquer the world, from the hands of Sphere Union.