Lu Zhaohuang was once the "crazy third lady" of the Landu Lu family. She was punched to the point of death by her fiancé Ji Yunche on the Zhenwumen trial stage. This unexpectedly awakened the power of the Ember Finger that had been dormant for many years in her body, and also awakened her mind that had been suppressed by poison and old wounds. While she regained her martial arts and medical skills, she uncovered the truth behind the conspiracy set up by the Ji family, Kuroshio Hall, and a branch of the Lu family. Under the guidance of the seventh prince Xie Linchuan, she walked into the hidden line of the Northern Demon Ze and traced the old formations and secret maps left behind by the Lu family's ancestors. She no longer wants to be anyone's pawn, and wants to recover the debt she owes her life and her family one by one.