Zhan Zhao, now a fourth-rank imperial guard, receives evidence from an old friend about an unsolved case and sets out on a quest to uncover the truth. He encounters attacks from various factions, and along the way, he meets Huo Ling Long, the talented and unyielding daughter of Linglong Villa, and Bai Yu Tang, the passionate and ruthless "Golden-Haired Rat." These like-minded individuals pursue clues, fight for justice, apprehend criminals, and tear apart the web of influence Prince Xiang Yang has woven across the court and the underworld.