In Exorcism Goddess, Ahyana hunts down demons and has tracked an obscene demon to a new world. Determined to defeat it, she settles there, searching for the creature. This demon, however, has the power to control the inhabitants, driving them into a frenzy of lust. Though Ahyana fights valiantly, she slowly succumbs to their assaults. To save her, Belva, a priestess of the Exorcism Goddess, arrives. Yet, the enemies she now faces are far more dangerous, having become highly skilled in their attacks due to their encounters with Ahyana. As a result, Belva risks falling to corruption even faster.