Stormy seas, creatures risen from the depths, and unexplained bloody attacks. Robyn knows these macabre signs all to when when she returns to her native village of Astaak after a long ocean voyage. Stripped of magic, but a formidable Master Blade in combat, she knows how to heed her hunches. Along the way, she meets a mysterious young man, Daérion. He is tracking the invisible bloodthirsty beast terrorizng the populace. When she learns that this creature is behind her parents' death, Robyn has but one goal: its utter annihilation. This dread quest for vengeance drags the comrades-in-arms down a dark path...