The old world has ended following a sudden invasion of the abyss. The laws of society have long been forgotten.

Countless monstrosities now run amok on the plane, massacring humans.

In this hopeless world, the Abyss dwellers who have fought off the invasion roam from one place to another.

For the sake of survival, they became demons themselves.

But with the threat of the abyss already dealt with, for what reason do they continue to mindlessly travel throughout the lands?

Amon, one of said Abyss dwellers, haunted by memories of the past finds himself forced to take a stance as the possibility of another calamity threatens to engulf the entire plane once more.