The real world of the interstellar holographic game "Sky". The novice planet 'Gray Star' is in the throes of transition from an old civilization to a new interstellar civilization. The villain organization "Black Thorn Chaebol", which attempts to overthrow the rule of the planet, has established secret bases in the wilderness and conducts cruel "Prometheus" human experiments. There are the ruling class "Seven City-States" on the planet and the "Scavengers" who roam the wilderness. The player group (the fourth natural disaster) is about to come in more than three hundred days.
