The path to immortality is extinguished, but the fire of love never goes out.
After the ancient war between immortals and demons, the order of heaven and earth collapsed, and the world of cultivation fell into undercurrents of strife. Yuan Qing, as the last descendant of the declining immortal sect "Jade Sky Palace", was born with incomplete spiritual veins, but was coveted by all forces because of the forbidden "True Fire of Chaos" sealed in his body. She lives on in the world just to find out the truth behind her master's destruction, but during a hunt, she is forced to awaken the demon king Su Jin who has been sleeping for thousands of years.
Su Jin, a fallen immortal who once burned down the thirty-third heaven with a single sword, was ruthless and desireless, but his seal was accidentally broken due to Yuan Qing's blood. He ridiculed her for being weak and hated her for being stubborn, but he had to conclude a life-and-death contract with her. From using each other to relying on each other in life and death, the two embarked on a fate-defying path amidst the siege of the immortal sect, the conspiracy of the demon clan, and the curse of heaven.
"You are the pain in my heart and the only reason for me to live."
When the true fire of chaos burns out Su Jin's sanity, and when Yuan Qing discovers that his spiritual veins have the same origin as his... This bond that started with calculation will eventually burn through the three realms and redefine life and death.
Intention: "Even if my destiny turns to ashes, the fire in my heart will never be extinguished. My destiny is my way."