In the 19th century, Emperor Xin Langshen initiated a fierce selection process to determine the successor to the throne among his four royal princes. However, the Fourth Prince—Xin Weiyu, Prince Ningyuan—refused to participate. He vanished from the palace without a trace.
Behind rumors of his banishment or death, Xin Weiyu disguised himself as Young Master Mu Qingye in Guazhou city. His sole purpose: to investigate a grand conspiracy entangling Grand Minister Feng Yuan on charges of rebellion and human trafficking in the Shuyi region.
Haunted by the past, royal vengeance, and a promise to a fallen friend, Xin Weiyu risked everything for the truth. Yet, beyond the palace walls, the world was crueler than he anticipated. Will this disguise free the empire from ruin... or will it plunge the prince himself into destruction?