After guarding the Demon Cave alone for ten years to protect the Rosefinch Empire from demons, Martial King Harvey Shawn discovers that the demons have seemingly vanished and the outside world doubts his efforts. The new empress, PhoenixXander, confronts him publicly, accusing him of falsifying reports, embezzling funds, and neglecting his duties. Despite the cave's peaceful appearance, Harvey reveals its safety is maintained by a hidden demon-sealing formation. The empress strips him of his rank and orders his arrest, forcing Harvey to face judgment and fight against the charges that threaten his honor and legacy.