After the turbid atmosphere of the prehistoric era faded away, the aura of the four images of green dragon, white tiger, red bird and Xuanwu took shape in the world. The young man "Yun Yuan" accidentally found the remaining scales of a green dragon and awakened the sleeping Eastern mythical beast in the vast mountains, but he did not know that his bloodline was closely related to the ancient spiritual veins; the girl "Yue Li" from the Western Region caravan found a white tiger tooth Zhang in the ancient desert city. When the winter wind and snow suddenly rose, the phantom of the silver-white tiger roared behind her; abandoned The orphan "Red Flame" who lives in a volcano in the south, the Suzaku totem born in the palm of his hand burns with pain every new moon, until in the light of the sky, the fire-bathing bird flutters its wings and breaks the thousand-year seal; the northern sea mermaid "Canglan" sneaks into the depths of the ruins to find his missing brother, and the star map on the black turtle's back actually guides him into a mystery that has lasted for thousands of years. When the power of the Four Symbols reappears in the world, a fateful appointment related to the survival of the people is slowly unfolding following the footsteps of the four protagonists.
