The number one killer in modern times, codenamed "Ye Huang", was reborn as Yun Qinghuang, a cowardly concubine of the Prime Minister's Palace. She originally wanted to be a Buddhist, but was forced to do business. Therefore, she strategizes in the court and is the mastermind behind the storm; in the backyard, she plays the role of a pig and eats the tiger, and is the funny person responsible for dealing with all kinds of dissatisfaction. Until she discovered that the sinister prince who thought about how to "kill" her every day seemed to be her "optimal solution"?