Synopsis
Long ago, an ancient civilization known as the Kingdom of Spheres existed on Earth, though humanity recorded nothing of it. Its people possessed abilities that today would be called psychic powers. However, like many other societies before it, the kingdom grew increasingly divided between social classes, and those hungry for power brought turmoil—eventually leading to its collapse. After the fall of Spheres, a mysterious girl named Na Yeon was discovered in Antarctica. Asten, the chairman of Sphere Union, harbors a fierce ambition to dominate the world. He dispatches his agents to keep Na Yeon under surveillance. Na Yeon and her companions strive to prevent three artifacts—the keys to global conquest—from falling into the hands of Sphere Union.