During the Five Dynasties and Ten Kingdoms, wars broke out everywhere. {Ye Lingshuang} was adopted by the assassin organization "Shadow Pavilion" since she was a child. She used the embroidered knife in her sleeve as a blade and became a feared killer. She received the ultimate mission: to assassinate Qian Liu, the king of Wuyue in Jiangnan. However, after sneaking into Wuyue, Ye Lingshuang discovered that Qian Liu was not as cruel as rumored. Instead, he did low taxes and built water conservancy projects, which won the hearts of the people. What shocked her even more was that Shadow Pavilion had already been controlled by Hou Tang in the north, and the assassination was just a pawn to provoke civil strife in Jiangnan. Ye Lingshuang was caught in a dilemma between the organization that raised her and the safety of hundreds of thousands of people. In the end, she chose to abandon the Shadow Pavilion with her embroidered knife, protect the peace of one place as an assassin, and expose the conspiracy of the Later Tang Dynasty. However, she also became the target of the organization's pursuit. From then on, she wandered south of the Yangtze River, adhering to morality in troubled times.