After his parents passed away, Kimihiro Watanuki lives alone. He is a high school student who can see otherworldly creatures that are attracted to him. These nuisances plague his days, and he wishes to rid himself of this inconvenience. One fateful day, while being chased by a horde of spirits, Kimihiro's feet bring him into a mysterious store to seek shelter. There, he meets Yuuko Ichihara, the mistress of this supposed store, who claims to be able to grant wishes. Yuuko offers to grant Kimihiro's wish, as long as he pays an appropriate price. Thus begins Kimihiro's time working in her store to earn the payment necessary for his wish. In Yuuko's employ, he must become further involved with spirits and the supernatural before he can leave that world behind. How will he fare in the inexplicable encounters that await him?