When innumerable monsters emerged from rifts and swept across the cities, bringing chaos and an oncoming apocalyptic calamity, humanity faced the descend of another world upon Earth. Humans modified their vocations to fit into this new planet, and each nation concentrated on developing the best professions to vie for supremacy on the conquest leaderboard of the other globe. All the bosses of the other world shook and all S-rank professionals worldwide bent down in submission when the mythical dragon king of the Dragon Kingdom, slumber for millions of years, suddenly awoke with the resources he had amassed over a million years.