Once upon a time, a goddess created nine races, and humans were the weakest of them, so the others mocked them. A group called the Alliance of Races was formed, and a human boy named Light was lucky enough to join. However, his happiness was short-lived, as he was betrayed in Hell, the largest and most terrifying dungeon. Despite surviving, Light discovered the true power of his gift, Infinite Gacha. Now, having emerged from the depths of despair, Light is building the world's most powerful kingdom and plotting his revenge.