Since the founding of the Yuan Dynasty, Emperor Zhao Yuwen of Yuan Yuan managed martial arts, quelled rebellions inside, and eradicated barbarians outside. The Huntian Supervisory Institute Si Zhengbai and Yitong accompanied Sun Duhu of the Duhufu of Xiyuan, and went to Xiyuan to investigate the locust plague and cholera that plagued the people. Bai Yitong. Bai Yitong observes the heavens, predicts the incision, establishes a calendar to solve problems, and solves strange cases every time, earning the emperor’s trust. But Bai Yitong was strict and inflexible, but the others could not say anything and just listen. Bai Yitong is idle except for his work, and his teacher, Sikong Chong, freely devotes himself to research at the inspectorate. Bai Yitong and Sun Duhu found a hole in a cave during the locust damage investigation, where they are indiscriminately attacked by locusts. Then, Bai Yitong returned to the city with his hands and reported this strange incident to His Majesty the Emper

Wang Xuan and Xiao Qi strike a deal for the sake of power. They marry first before falling in love and join hands to protect their homeland. She is a woman who is no less than any man while he rose from humble beginnings. The imperial family has become rotten to the core. The nobles are lavish with no regard for the people. Princess Wang Xuan and her childhood sweetheart, the third prince, become pawns of a prophecy that states, "to acquire thee is to obtain the world." Being pulled into the matters of the court, Wang Xuan is married off by her father to Xiao Qi who comes from a poor family. On the night of their wedding, Xiao Qi is forced to leave the capital. Wang Xuan is shamed and discouraged. The Helan Prince kidnaps Wang Xuan in order to seek revenge on Xiao Qi. The crisis they face becomes a blessing in disguise for the couple. Wang Xuan is moved and inspired by Xiao Qi's wish to bring peace and prosperity to the nation and they fall in love.