Modern Lin Xu transmigrates into a Xianxia book, becoming the vicious master who abuses the male lead Gu Xingci. To avoid the tragic ending of the original work, she tries hard to build favorability with Gu Xingci, but Gu Xingci, who carries the bloodline of the demon race, has a strong desire for possession. The storm of the grand competition erupts, the Demon Lord appears in the world, and Gu Xingci's demon blood completely awakens. Lin Xu does not hesitate to break with the sect to protect him. After going through the turmoil of the secret cave prison, everyone resolves the crisis.