It tells the love story of Yu Zhong Sheng, the eldest apprentice of old carpenter Yi Da Chuan, and his granddaughter Yi Xiao Chuan. Yu Zhong Sheng secretly fell in love with his teacher Yi Da Chuan's granddaughter Yi Xiao Chuan. Driven by jealousy, second apprentice Yin Dong Yi sabotages Yu Zhong Sheng's neighbor's house beam which results in the death of a child. Yu Zhong Sheng takes the blame and goes to jail. Due to circumstances, Yi Xiao Chuan is forced to marry Yin Dong Yi even though she is in love with Yu Zhong Sheng. Yu Zhong Sheng hears about the news in prison and vows revenge. He makes good on his words after his release, taking ever opportunity to knock his opponent down. Seeing Xiao Chuan and their relatives in pain because of the fight between the two of them, Yu Zhong Sheng and Yin Dong Yi gradually come to understand the truth.
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