During the Great Zhou Dynasty, twin girls were born into the world, carrying the "Phoenix Blood Pact". If one of them gets it, they can control the world. If the twins coexist, the dragon's veins will awaken and the world will be in chaos.
Su Yuli (formerly Su Wan) was sent to the palace as a concubine since she was a child. She has a phoenix birthmark hidden on the back of her neck, but she doesn't know her life experience. Lu Beixiao (formerly Lu Chenzhou) appeared to be the prince of Zhenguo, but in fact he was a descendant of the Mobei Wu Clan, and he approached her with a blood feud.
In order to seize the power of the Phoenix, Jamel Xiao slaughtered all the Lu family, but he didn't know that the real "key" was the brainchild of the twin sisters. When Su Yuli met her twin sister Su Yujue (the former queen), the dragon's veins changed and the world was in turmoil.
Lu Beixiao came for revenge, but fell in love with the daughter of his enemy in a conspiracy. Su Yuli fought for freedom, but found that she was the core of the curse.
In the end, Kunlun Ruins was stained with blood, and the phoenix rose to nirvana, but the real darkness had just begun.
