Together, the tenacious Black Cat Fran and her sword named Teacher have cut their way to freedom. With Fran now recognized as a fully-fledged adventurer, the two of them set forth on a quest to gain strength and experience in battle. A perfect chance appears: a horde of goblins, led by a vicious Goblin King! Yet all is not as it seems, and this adventure just might wind up more dangerous than anyone imagined.