The World of Erah contains 5 different continents: Middle (the land of forests, which only contains one Academy (and the forests)), North (the land of snow ruled by three royal families), South (the land of sand, ruled always by one king, without dynasties), the West (the land of mountains with government) and East (the unknown land led by a mysterious Empress). It was created by the Creator, the only True God to defeat Darkness by creating its opposite: Light. The brightest form of Light is life itself, so the Creator created more different species to Erah: humans, avians (bird-like humanoids), sauris (reptile-like humanoids), and kines (small intelligen rodent). However, because of the differences in cultures and species, it was unavoidable that sooner or later, there will be a conflict in the world. It happened, and the First War occured during Erah between the nations. However, to avoid the conflict, the Creator decided to add tools to a few chosen warriors to stop conflicts and wars in the world once and for all. These creations, the Guardians, were destined to protect Erah and bring back peace to world. These warriors were successful, and brought back the peace to Erah. They were called Archs, the "ancients", since they were connected more to the Creator than anyone else.

However, some of the Archs started to think differently. They thought that even with the Guardians, people will rise against them in the name of liberty, and sooner or later, everything will begin from the start. They decided to rule them under the wings of tyranny to control people and protect peace of Erah at any costs. However, the other Archs did not agree with the decision, and the Second War (also called as Arch War) occured. The war almost destroyed the whole world, however, people could protect each other from the havoc of the warfare, and they survived. However, both the Archs and the Guardians became only history for a really long time...

...but now they are back. For unknown reasons, they are awakened, and no one knows why. It's up to you to find the answers for the questions appeared together with these relics.