Su Mu, a contemporary cattle and horse beater, accidentally traveled back to ancient times. The good news is that he is the prince's son who has no worries about food and clothing. The bad news is that he is the prince of a prince with a different surname who guards the border. In fact, the emperor is afraid that the prince will rebel and uses him as a pawn. In order to survive, he can only pretend to be a playboy. However, he is accidentally involved in a conspiracy of disaster. The emperor asked for immortality, but he did not seek immortality, and inadvertently created a terrible by-product--the living dead.
