Jiang Yu, the Empress of Jiang State, is reborn as the fake heiress of the Jiang family, single-mindedly seeking Empress Shen Ji. Shen Ji suffers from innate cold poison and is embroiled in family entanglements, initially full of wariness toward Jiang Yu. With a pure and kind nature and strict adherence to principles, Jiang Yu calmly handles surrounding trivial matters and assists the police in their duties with her superior martial arts skills. She successively reunites with former subordinates Qing Yu and A Zhan, and everyone accompanies each other with one heart and mutual support. Jiang Yu meticulously cares for Shen Ji, steps forward to protect her safety, and slowly warms the other person. Together, the two collect evidence of crimes of lawbreakers and hand them over to judicial justice for disposition. In the end, Shen Ji's cold poison is cured, her mind becomes clear, and she achieves mutual redemption with Jiang Yu. Everyone lives in peace and security, upholds justice, and finally reaches a perfect and benevolent ending.