In the world of Solo Leveling, hunters are humanity’s only protection against the monsters emerging continuously from portals called Gates. These extraordinary people are categorized by their levels, which start at E and end at S, with the latter being as strong as a god. Whereas the rest of the hunters are barely able to provide for themselves and each battle is a battle for their survival, S-Rank are certainly in a different world altogether—strong enough to wipe out cities or defeat notorious disasters on their own. Some are so high that they are similar to the highest-ranked big game hunters globally, identified as National Level Hunters.