Li Jinxiao burned his soul in the Jiuyou Abyss, and when his blood and bones turned to ashes, he used the last ray of Yin Fire to contract with Yu Xiyue, a witch who had been sealed for thousands of years. She is neither a ghost nor a god, she is the spirit of the eclipsed moon condensed by the resentment of the world. She was once abandoned by the way of heaven, but she regained her obsession because of his determination. When the underworld collapses and the human world becomes a purgatory for dead souls, the two join hands to go against the will of heaven - he uses the burning soul as a guide, and she uses the eclipse moon as a blade to tear open the cracks in the underworld and regain the devoured Yangshou and Karma. This is not redemption, but revenge; it is not symbiosis, but co-destruction. Only Li Jinxiao's ashes can ignite Yu Eclipse's true form; only Yu Eclipse's blood moon can illuminate Li Jinxiao's undying soul light.