- Yu Chen, a civil engineering graduate from 985 University, was inspecting a construction site when he was hit by a falling steel bar while trying to save a worker. When he woke up, he found that he had traveled back in time to ancient times and was kneeling in the lobby in a county magistrate's uniform while he was hearing a land dispute case.
- Facing a completely unfamiliar environment and language, Yu Chen managed to cope with it with his wit. After quitting the court, he learned from his master Zhao Ming that he was the newly appointed magistrate of Qingshui County.
- Yu Chen found in the backyard of the county government office that his modern backpack had also traveled through time. It contained a mobile phone, a laptop (with only 30% battery left), professional books and a small amount of modern medicines.
- Master Zhao Ming was keenly aware of the "adult"'s anomaly, but chose to remain silent and took the initiative to help Yu Chen adapt to his status as a county magistrate.
