High schooler Yohana Sakaki lives in a town full of ghosts, spirits, and other ethereal beings, where the eminent Yashiro family is tasked with keeping these beings in check. Yohana has distant ties to the family, but she lacks any abilities and has resigned herself to an ordinary life. When she falls into a pond at the Yashiro estate, she seems to catch the eye of a high-ranking member of the Yashiro hierarchy—only to be ignored in favor of another girl, who strangely had the same accident. Having apparently lost her golden opportunity, Yohana is instead aided by a mysterious young boy named Chitose, who has little status but quite a few secrets. And when she begins spending time with him and assisting in his spiritual work, she learns that her destiny may have changed more than she realized—but whether for good or ill, no one can yet say.