She is the daughter of the Golden Court's foremost shadow guard. Her father died in a single day, poisoned by “Ghost Music.” He is the Netherworld Ghost Lord of the Wentian Sect, who made her a promise and trained her to become a “Ghost Maiden.” He sends her into the palace as a maid, back to the place where her father met his tragic end. After enduring every hardship, her hatred burns like a wildfire. She wants to kill her enemy with her own hands, but he leaves the Wentian Sect and enters the mortal world, becoming a target for everyone...