A sudden change occurred, and a huge crack appeared in the sky above the earth.
Countless strange things emerge from the cracks and hide in every dark corner of the city.
The catastrophe also gave some people special abilities. They formed an organization of shelters and traveled around various cities to take in those weird things.
Catastrophes continue to deepen, world order collapses, and civilization is about to be destroyed.
Just when everyone thought it was a 'natural disaster', the truth gradually emerged...
