National security agents Ling Yue and Qin Lan encountered a laboratory explosion while stealing core information from a transnational criminal group. They were both involved in a rift in time and space, and fell into the disputed Dajing Dynasty.
Ling Yue wakes up and transforms into Su Qingyan, the lady of the Tutor's Mansion. The human skin mask hides the acumen and tenacity of an agent. In order to find her lost best friend, she was forced to accept a finger-marriage and marry into the palace of the God of War, which held a large number of soldiers. She was constantly involved in the whirlpool of competition between wives and concubines and factional strife in the court. She uses modern spy skills to resolve plots, improve the palace, and come up with many ingenious strategies. However, in her relationship with the cold prince Xiao Jin, she gradually develops a love that transcends time and space.
Qin Lan lived in the south of the Yangtze River and was rescued by Chu Yuan, the leader of the martial arts alliance. He relied on medicine and organ skills to gain a foothold in the world and became the revered "Mr. Qin" by everyone. Although the two sisters were separated by the sky, they always followed each other's footsteps and approached quietly at the junction of the court and the rivers and lakes.
When relatives stir up trouble, martial arts changes occur, and palace changes occur, two agents from another world work hand in hand to use modern wisdom to break up the power and intrigues, and use iron and blood to calm down the turmoil in the world. Ling Yue sheds her disguise as a substitute and uses her true identity to guard her homeland with Xiao Jin; Qin Lan and Chu Yuan form a knight-errant alliance to reconcile the world and the court. The friendship between the two lovers is indestructible. The two lovers held hands and accompanied each other, creating a legend of "Jingan and Prosperity" in the troubled times of ancient times, and writing about the protection and deep love that spans time and space.
