While the mainland of the Empire faces both conflict and the slow creep of the dying land, there is one region that continues to prosper: Lazulis Island. The key to the island's defenses is a battery of mighty guns which exude strange magic that seems to draw monsters in.

The young mercenary Zael, along with a band of fellow adventurers, comes to the island in hopes of finding more work. Their new employer is none other than the ruler of the land himself, Count Arganan. If they can meet the count's expectations, there is some hope that their unstable mercenary existence could become a thing of the past. For Zael and his companions, who dream of a stable life as knights, this job represents a chance they may never have again.

And it's during their exploration of a dreary, damp cave as part of their first mission that Zael obtains a mysterious new power. One that may help shape his destiny... or just make life a whole lot more complicated.