Separated from one another, not-so-average-anymore schoolgirl Nanami and her allies are trapped by the schemes of a mysterious group of demons that wants Nanami's hidden powers for itself! And to have any shot at escape, Nanami has to look deep into her soul and get to know her ancient, powerful side a little better! But a victory in this battle isn't necessarily the greatest option...getting out of the demonic trap means Nanami is about to land right in the middle of the intense war raging between humans and demons!