The Spirit World is a world mentioned in Grand Chase Dimensional Chaser. It is home to dragons known as Spirit Lords, such as Tekarion and Innadril.
There is nothing much known about the Spirit World and how it came to be. However, the balance of the Spirit World is said to be rapidly collapsing. One of the collapsing balance's many impacts is leaving the title of the Spirit Lord of Ice and its associated Frozen Throne without a proper dragon king.