God created Light and Shadow and separated them with the power of the divine Words Worth Tablet. One day, the Words Worth Tablet shall be read and all will be understood, and Light and Shadow will join and become complete. But someone has shattered the Tablet. The Realms of Light and Shadow each blame the other and war ensues for 150 years. The story revolves around Prince Astral of the Shadow Realm who may be the one to bring the Realms together and restore peace.

[Modified from ANN]