After successfully negotiating with the wolf monster Rin and preventing him from destroying the Cave of Desire, Keima catches word that yet another unwelcome guest has arrived in town. This time it's not a Hero nor a monster, but a high priestess from the Holy Kingdom's Church of Light! She tells Keima that she's willing to destroy Rin for him...but only on the condition that she be allowed to destroy Rokuko as well! How will he fend off this new threat?!