Shen Mo, a web novel editor, dies suddenly from overwork and unexpectedly transmigrates into a fantasy novel, becoming Yin Wuxie, the ultimate villain and Demon Lord destined to have his body and soul utterly destroyed. Familiar with the original storyline, he refuses to repeat his predecessor's fate and resolves to rewrite his destiny. He abandons his brutal demonic cultivation technique, which devours the souls of living humans, and instead improves it using the souls of demonic beasts to calm the people of the Demon Realm. He also finds the original character's younger sister, Yin Wushuang, and vows to protect her, while planning to save Liu Ruyan, a female supporting character who dies tragically in the original story. But strange changes are stirring beneath the world's surface. Blood-red words appear on the pages, as though a pair of eyes is constantly watching him alter the course of the story.