Shen Yuan, a modern soul also known as Yuanbao, transmigrates into a book and becomes the cultivation world's most notorious criminal. Accused of stealing her master Du Junjie’s immortal marrow, she is stripped of her cultivation and locked in a frigid pool to await death. The transmigration System gives her a cold warning: only by cutting out her heart to save him might she prevent his future fall into demonic ways and his slaughter of the three realms. She struggles to survive, yet becomes ensnared in his hatred and a deadly, ambiguous desire. When the truth reveals the most devastating secret behind the heart offering, she proves her Dao by cutting out her heart and giving it to him, only to ultimately lead the gentleman into becoming a demon! A thousand years later, beside the Cliff of Extinction, a golden flame flickers at the heart of a red spider lily. In his world-burning demonic flames, it is the one spark that never dies.
