Tiara, a skilled sorceress, and her familiar, Japolo, have been dispatched to Earth from the Guardian World, a realm of powerful beings tasked with maintaining the balance of magical energy. Their mission is to retrieve the Throne of Yord, a magical artifact that serves as the source of the Guardian World's power and must be returned before it falls into the wrong hands. While tracking the artifact, Tiara encounters her old friend Lena, another sorceress who is also seeking the Throne of Yord. Tiara's situation is further complicated by the appearance of Kagetsu, a man for whom she once harbored strong feelings. Kagetsu is a negater—a person with the ability to neutralize magic—and holds a close link to the Throne of Yord. Torn between loyalty to her mission and her bonds with friends, Tiara embarks on a difficult journey filled with unforeseen challenges.