Modern criminal police officer Shen Qingci travels through time via a mysterious jade pendant, becoming the daughter of the Prime Minister of Dajing. At the start, she is framed for murdering Zhou Zhang, an insider in the salt transport, and is put on trial under false charges. Relying on her professional criminal investigation skills, she clears herself of murder suspicion and senses that a dark corruption scandal in salt transport is hidden behind the case. To cover up the evidence, the Salt Transport Viceroy uses power and influence to forcibly obstruct the investigation. Xie Yanzhi, Vice Minister of the Court of Judicial Review, sees through the doubts and assists in secret, while secret emissary Xiao Che provides covert intelligence support. Under the escort of her father Shen Zhan, Shen Qingci calmly responds to interrogations in the Golden Palace and receives an imperial decree to investigate the case. Everyone assembles in position, and relying on the new clue of Yongchang Fish Market, they officially embark on the path of game-playing to solve the giant salt transport case and unlock the destiny of the jade pendant false accusation case.