During the thousand-year war, the twelve tribes were severely damaged by the Dragon Clan, and the tower that maintained world peace also cracked and collapsed, becoming twelve fragments and scattered in the mortal world.
Legend has it that as long as you possess all the tower fragments, you can obtain the world of Atrea.
Ariel, the guardian of one of the fragments. Because of an oversight, the secret of the fragment was leaked, and the escape began, and a conspiracy also unfolded...