High school student Takahara Yachiho has just moved into a notoriously haunted house on the outskirts of town. With only her cat Fuku-chan for company, Yachiho is disturbed by strange sounds and happenings until the day she comes across a small passage leading to a hidden lower floor. There she discovers spirits of all shapes and sizes, guided by the tiny supernatural manager Moro. If Yachiho is to call this place home, she'll have to deal with its ghostly denizens and find a mysterious book that may be the key to locating her missing mother.