In 2044 AD, alien rifts known as "Apocalypse" appeared all over the world, and countless alien monsters "Shoggoth" poured into the earth. When the human world is in danger, the Gaia consciousness of the earth launches the ultimate defense protocol "Global Gamification". All human bodies have been digitized, the rules of the world have been reshaped, and some lucky people have awakened as "players" and gained an ability system similar to online games. They can upgrade and become stronger by killing monsters, ushering in an era of national resistance.