The Witch Cult has finally been driven from the Water Gate City, but the turbulent events have left deep scars on Pristella. Far too many people have even been robbed of their names and memories. In order to save them, Subaru and his friends set off on a dangerous journey to the Pleiades Watchtower. To get there, they will need to cross the Auguria Dunes, home to vicious demon beasts of every stripe and so treacherous a place that even Reinhard was forced to turn back.