The episode begins with rumors about a powerful Class S beast roaming outside the city, rumored to drop rare SSS-level soul stones. Motivated by this, the protagonist—possessing a Class SSS slime—decides to venture out, confident in their growing strength. They easily defeat invading goblins, quickly leveling up and enhancing their own power. As the protagonist pushes deeper into the wilderness, they discover that common goblins have been devouring much more than expected, raising the stakes. The episode ends with the protagonist encountering signs of the elusive Class S beast, setting up a tense pursuit for the valuable soul stone.