Chen Fan, while playing a mobile game, is suddenly transported into the game world - Mu Dynasty. Gaining the favor of Princess Mu Ning, he becomes her personal companion. His first task is to sneak into the bed of the Eldest Princess, Mu Sang, and steal the Military Token. Caught in the act, Chen Fan uses his modern knowledge to solve a political crisis, earning the Princess Sang's trust. Now, he must help these princesses face the looming dangers threatening the dynasty, using his wits to survive in a world of intrigue and power.
