It tells the story of Xin Yun Ge, a charlatan who was born into a humble family and was good at using tricks. In order to avoid being wanted by the government, he fled all the way to the border city of Dongye. However, he did not expect that his heroic act would accidentally disrupt the action of Qin Li Xing, the prince of Zhenjiang, to round up spies from the enemy country. In order to escape, Xin Yun Ge was forced to cooperate with Qin Li Xing to start a scam of "the princess is coming". As one thrilling assassination after another came, a greater crisis quietly approached.