Dungeons and portals appeared on Earth. God bestowed Humanity with the power to defend themselves. The chosen ones are called Guardians with the level and attributes limited to 100. Among them, there are 5% of Guardians who breaks past their limits of 100. They are called Eons and they can reach the level of 150. And 2% can completely break God's limiters. They are called Limitless class. Killing monsters earns exp. Exp is used to level up. However, the stronger humans got, the more arrogant and corrupt they become. Jack wasn't chosen by the Gods. He watched his parents and friends die in front of him when the dungeon broke. He begged God for power, but no one answered his calls. The heroes didn't arrive until it was too late. However someone else answered Jack's call, something dark... The infinite void...