The civilization of the kingdom of Nusgarde flourished in a barren land, under the blessing of Sephirot of the Tree of Life.
The inhabitants of Nusgarde discovered that Sephirot was part of the world tree, which existed in another world, Eingard.
They then began the construction of a dimensional portal, Elyon, and a huge airship to reach
to Eingard and obtain a great source of power.
However, just before Elyon began operating, they were attacked by an army of machines,
known as Black Apostles. The Inventus aircraft was seriously damaged and is at risk of falling.
Eingard, where no one has reached; and Elyon, the only way to reach it.
The great war to dominate Elyon has begun.
