When Nanoka is transported back in time to a supernatural early 20th century, she gets recruited by aloof exorcist Mao. What thread of fate connects them? Together, they seek answers...and kick some demon butt along the way!

Mao is confronted by former fellow apprentices who should have died of old age long ago. What is the connection between them and cat demon Byoki? After a major battle, Nanoka returns to the present upset that Mao doesn't seem to care about her. But there's no time for matters of the heart because a dangerous nemesis has entered her reality with her! Then, when someone steals the source of Mao's life, can Nanoka save him from a natural death...?