A mysterious island where any wish can be granted if one conquers the seven dungeons. Among the many adventurers competing on this island is a boy who, due to certain circumstances, has been a level 1 porter. His earnest and hardworking nature, combined with the unique ultimate skill granted by a goddess, makes him highly valued by the adventurers. However, his role as a porter is only temporary. Using the ultimate skill that even the goddess would be surprised by, he finally breaks through the level 2 barrier and begins his journey to become the strongest.