In ancient times, the five tribes of humans, foxes, witches, barbarians, and seas made a "covenant of unity", with the imperial mausoleum of the Qiwu Kingdom as the core to seal the "power of chaos" - an ancient evil energy that can devour the tribes and subvert the order of the three realms. The Fox clan uses the "Blood Oath" to ensure that the orthodox inheritance of the Qiwu Kingdom will not be interrupted. The ancestors of the heroine Chunwan are the first generation guardians of the covenant, and use the "spiritual arrow" as a token to bind their friendship with the Fox clan, and they have been involved for generations.
