The modern city has long been invaded by the "Dark Demons," leading to the birth of countless brave warriors who protect the Earth. However, Ah Qiang, due to his lack of abilities, has never been able to become a warrior. One day, while working as a "Cleaner" to clear dungeon caves, he stumbles upon a mysterious ring. The moment he unknowingly puts it on, he is instantly transported to another world—a world divided into three major races: Humans, Elves, and Beasts.