In 2025, modern young man Zhang Qiao accidentally traveled back to the late Song Dynasty during an archaeological expedition, met Te Muer and became brothers. With modern knowledge and wisdom, Zhang Qiao tried to change history, prevent the establishment of the Yuan Dynasty, and protect the culture of the Central Plains. However, the flow of history cannot be changed easily. After experiencing a series of thrilling events, Zhang Qiao finally witnessed the rise and fall of the Yuan Dynasty and affected the situation in the early Ming Dynasty.