The story begins with Bao Zheng, a down-on-his-luck county magistrate who uses ingenious mechanisms and unwavering integrity to solve the mysterious Black Basin Case and execute powerful nobles, earning fame throughout the land. The Southern Hero Zhan Zhao, along with Wang Chao, Ma Han, and others, are moved by his loyalty and righteousness and pledge their allegiance to him, gradually forming the core team of the Kaifeng Justice Office. After solving a series of bizarre cases, including one involving the hallucinogenic and mind-controlling fragrance known as the Bewitching Immortal Incense, Bao Zheng faces the sensational Cat Swapping the Crown Prince case, which shakes the entire imperial court. Through an ingenious illusionary trap, he uncovers the long-buried truth, ultimately bringing down Empress Dowager Liu and helping the reigning emperor reunite with his mother. Bao Zheng rises to become the Prime Minister of the Song Dynasty. As he establishes his position at court, the treacherous and unpredictable martial world becomes his next stage.