Traveling at the speed of... a rapid-express wolf coach, the party hurtles toward their most dangerous destination yet: the plagued lands of the Nobody Abyss. In search of the infamous first High Saint, Soffione, Shibuki, and Surfi brave the descent down to confront the first saint-gone-rogue and obtain her legendary weapon, the Mystic Blade. But once they taste her devastating power, retreat may be their only option. Meanwhile, Lyco and Vanilla face a fearsome threat of their own, but in their darkest moment, familiar faces arrive.