The righteous path of Xuanling Continent has been at odds with the demonic realm for thousands of years. Mu Li, the saint of the "Pure Dust Sect" who is the leader of the righteous path, is a "glazed pure body" that is rare in thousands of years. Her mission is to purify the darkest evil spirits in the world. Ye Jin, the Supreme Lord of the Demon Realm, is burdened with the "World-Burning Blood Curse" and is identified as the scourge of world destruction. In order to complete her mission, Mu Li lurked in the Demon Realm and tried to influence Ye Jin at the cost of three lives and immortality. The first two lives ended in tragic failure: the first life was abandoned by him after being used by him, and the second life saw him slaughter the righteous way to seize the "Heart of Heaven". In the third life, she approached him again as an amnesiac servant disciple, but gradually discovered that Ye Jin's "devil heart" originated from the curse she endured to protect the common people thousands of years ago, and the "glazed body" of the Righteous Saint was the only one that could purify the curse and the only key that could completely destroy him. When Mu Li finally touches the truth, the ultimate choice between life and love, mission and sincerity pushes her into an abyss of eternal destruction. In the end, she chose to bear the stigma of being a "saint" and carried his curse and karma with her own body. They fell together and completed a shocking "change of destiny" that defied the will of heaven and earth.
