Programmer Luo Weiwei accidentally enters the world of script-killing and becomes the princess of Nanjiang, Luo Yunxi. She receives a mysterious mission: to help King Mu of Beisheng ascend the throne. After Luo Yunxi successfully solves the assassin who wants to kill King Mu, she is favored by King Mu; but she is involved in a shocking conspiracy between Nanjiang and Beisheng...