In the thirty-seventh year of the First Emperor of Qin, on the eve of the Sand Dune Incident. Three young people with different identities were swept up by the torrent of history and involved in a conspiracy concerning the survival of the empire. The cold-faced and iron-blooded leader of the imperial guards, the bloodline of a young man living among the people, and the mysterious female doctor with great medical skills. The three of them met inside and outside the walls of Xianyang Palace. They struggled to make a choice between the struggle for power and the common people in the world. While the flames of burning books were not extinguished and the masonry of the Great Wall was still warm, a secret war that overturned the fate of the Qin Dynasty quietly began. This is an epic story about the collision of loyalty and betrayal, ideals and intrigues, personal destiny and the tide of the times.