Teenage Nanoka travels back in time to early 19th-century Japan and meets teenage exorcist Mao. What is the thread of fate that connects them? Together, they seek answers...and kick some demon butt along the way!

Nanoka, Mao and his helper Otoya investigate the strange cult of Priestess Shoko in hopes of bringing her to justice, but cursed dolls and scrolls of eternal life may be more than they bargained for. Will the priestess's doomsday prophecy come true? Back in the present, Nanoka and friend-zoned Shiraha do some historical research and uncover a cataclysmic event yet to occur in Mao's timeline. Then Mao's curiosity gets him on the wrong side of a group of bloodsuckers and in need of a rescue by Nanoka--again!