Lin Yuxuan, who passed through the book and became a cannon fodder female supporting role, was bound to the redemption system, and her mission was to save the villain Shen Zhou who was destined to go dark and destroy the world! He was born with demon bones and was imprisoned and tortured by the decent for ten years. He is cold, arrogant and lonely but has hidden compassion. In order to rewrite the tragedy, Lin Yuxuan gambled with her life, broke into the bloody dungeon, and fought against the conspiracy side by side with him. System tasks are approaching step by step, the mystery of her life experience is gradually revealed, and every time she redeems herself, her lifespan will be shortened. When the demon bone ignites the fire of destruction, can she be his only salvation? Is this life-for-life game the end of redemption or the recurrence of tragedy?