In ancient times, after Pangu created the world, the pure air became the realm of gods, the turbid air condensed into the secluded capital, and the wilderness and the human world evolved in between. Gods, strange beasts, witches, mortals, and ghosts each had their own way, but they fell into a thousand-year dispute due to the competition for the "Hongmeng Marrow" - the Hongmeng Marrow was transformed from Pangu's heart. It contains the power to reshape the order of the three realms and is also the key to maintaining the balance between the realms. The male and female protagonists have very different identities in three lives, but they are tightly bound to the ancient covenant by the Hongmeng Essence. Each life is forced to separate due to the disputes between the three realms. Finally, the closed loop of reincarnation is broken in the third life, which not only protects the peace of the three realms, but also perfects love.
