Sebuah kisah yang dihubungkan oleh serangkaian kasus aneh yang memiliki romansa, ketegangan, dan politik saat kisah tersebut mengikuti dua orang yang terjerat dalam pertarungan memperebutkan tahta. Bangun dengan kepribadian baru setelah trauma, Yuan Qingli lari dari pernikahannya dan menjadi seorang polisi.
Pada tahun pertama Kemudian, Liang hidup dengan Yuan Qingli (Yukee Chen), putri seorang jenderal. Saat berada di jalan menuju biara untuk berefleksi dan bermeditasi, ia diculik dan dipukul sampai pingsan. Setelah penyelamatannya, Yuan Qingli bangun beberapa hari kemudian tanpa ingatannya dan dengan kepribadian baru. Untuk melarikan diri dari pernikahannya sendiri, dia berpakaian sebagai seorang pria dan menjadi seorang polisi dari Kabupaten Qinhe.
Putra angkat Zhao Wang Jing Ci (Alan Yu) disergap saat menemani teman masa kecilnya Feng Mianwan untuk membina aliansi politik. Setelah diselamatkan oleh Liang Wang, Jing Ci mengasumsikan identitas seorang pejabat Liang dan menemukan petunjuk konspirasi di dalam istana. Untuk melanjutkan penyelidikannya, Jing Ci pergi ke Qinghe untuk urusan bisnis dan mengambil posisi sebagai pejabat daerah. Jing Ci yang sakit-sakitan dan polisi pemula Yuan Qingli bergandengan tangan untuk mengungkap lapisan demi lapisan korupsi yang sudah berlangsung lama. Dalam pencarian kebenaran, Yuan Qingli juga belajar identitas aslinya.
A story connected by a series of bizarre cases that has romance, suspense and politics as it follows two people entangled in the fight for the throne. Waking up with a new personality after a trauma, Yuan Qingli runs from her wedding and becomes a constable.
In the first year of Later Liang lived Yuan Qingli (Yukee Chen), the daughter of a general. While on the road to a nunnery to reflect and meditate, she is abducted and knocked unconscious. After her rescue, Yuan Qingli wakes up days later without her memories and with a new personality. To escape from her own wedding, she dresses as a man and becomes a constable of Qinhe County.
Zhao Wang's adopted son Jing Ci (Alan Yu) is ambushed while accompanying his childhood friend Feng Mianwan to foster a political alliance. After being rescued by Liang Wang, Jing Ci assumes the identity of a Liang official and discovers clues to a conspiracy within the palace courts. To pursue his investigation, Jing Ci goes to Qinghe on business and takes a position as a county official. The sickly Jing Ci and rookie constable Yuan Qingli join hands to unravel layers upon layers of long-standing corruption. In a quest for the truth, Yuan Qingli also learns her real identity.
Yu Meng Long as Jing Ci, God-son of Prince Zhao; son of the Yong Emperor. He is conferred the title of "Duke of Liang", and became a magistrate at Qinhe.
Chen Yu Qi as Feng Mianwan / Yuan Qingli
Feng Mianwan: An orphan who was raised by Jing Ci. She took on the identity of Yuan Qingli after the former disappeared, with her memories wiped by Jing Ci. She then becomes a constable at Qinhe.
Yuan Qingli: Daughter of a general. Feng Mianwan's twin sister. She swapped identities with Feng Mianwan to be together with her lover, Li Yuan.
Zhang Si Fan as Mu Beiyan, Son of Prince He. Yuan Qingli's fiancee.
Wang Gong Liang as Zuo Yanxi, Shadow guard of the Liang Emperor. A skilled physician.
Ma Yue as Princess Chang Le, God-daughter of the Yong Emperor. She likes Zhao Yan.
Liu Shuai as Zhao Yan, Minister of Yong kingdom. Jing Ci's cousin, Qing Li's close friend. A gentleman who is well-versed in arts, but is often teased for being a bookworm.
Xu Hao as Jiang Tan, Zuo Yanxi's junior sister and lover
Shao Bing as Emperor of Yong Kingdom
Wang Guan as Prince Ye, the fourth prince. Close friend of Mu Beiyan and Zhao Yan
Du Jun Ze as Prince Hao (De Ming)
Wang Bo Qing as Prince He, father of Mu Beiyan
Huang Wen Bin (黄文斌) as Prince Qing
Lin Jing as Madame Yuan, Yuan Qingli's mother. Old lover of the Emperor.
Cheng Shi Yu as Elder Princess Consort
Wang Yu as Xiao Lu, Yuan Qingli's personal attendant
Bi Meng Ge as Fu Xiaohan, a shadow guard responsible for protecting Jing Ci
Zhao Kang Wei as Xiao Xiao, Mu Beiyan's subordinate
Ruo Yu (若榆) as Yun Duo, Chang Le's personal attendant
Jiang Yang as Nian Qi, housekeeper of Yuan manor
Guo Yu Ting (郭雨婷) as Zhu Hongyu, subordinate of Prince He
Niu Hao Ran (牛浩然) as Xiao Zhuzi
People at Qin He
Lv Xing as Li Pei, magistrate of Qinhe
Chang Cheng as Qiao Li
Yang Chang Qing as Ding Cao, a constable at Qinhe
Xu Zi Xiang (徐梓翔) as Jing Yi, a constable at Qinhe
Hu Yuan Jun as Ming Xin, a nun
Shi Yue Ling as Reverend Miao Zhen, the Elder Princess
Wang Wei as Zhi Ge, a worker at the Monastery who killed Reverend Miao Zhen
Zhang Ya Nan as Xin Er, maid at Prince He manor
Huang Hai Bing as King of Zhao
Ding Ke Er as Wang Zesheng, daughter of King Zhao. She has a crush on Jing Ci and dislikes Feng Mianwan.
Yao Yi Tian as Aunt Zhi Xia, maid of Jing Ci. She hates Feng Mianwan and often picks on her
Yan Yi Min as Head Attendant Wei Shun
Cong Jian Zhang as A Heng, Jing Ci's bodyguard
Qi Ling as Li Yuan, general of Zhao Continent. Yuan Qingli's lover.
Chen Jing Yu as Xue Cai
Wang Yu Ning as Jin Dade
Zhang Hui as Xue Zhaoyi
Yu Yuan as Feng Ting
Han Fei Er as Xiao Yu
Gao Ming Yu (高明玉) as Fu Manqing
Jin Yu Qian as Consort Qiao
Wang Tian Long (王天龙) as Wang Nian
Zhang Xiao Han (张小涵) as Zhu Er
Fan Qi (范琦) as Ya Luo
Wang Bin as Li Honggui
Liu Tao as Ling Gu
Bai Xiao Hong (白晓红) as Qin Gu
Ma Chen Yu (马晨雨) as Xin Rou
Jiang Yan Ning (江晏宁) as Liu Wei
Chen Jia Yi as Cai Ya
Hong Si Yang as Jing Xin
Shao Si Han as Consort Jing
Lu Ying as Madame Zhao
Jing Long as Feng Lou
Chen Wei (陈伟) as Sha Zhi
Zhang Shi Tong (张世通) as Han Jing
Ji Yun Shu