In the ever-changing Shanghai Concession, Su Peiqing was just a law-abiding seamstress. Her "Yunjin Pavilion" cheongsam shop has a very high threshold and only accepts the most powerful women. The governor's wife complained that the gold thread was not bright enough, the banker's wife complained that the buckle style was old, and the popular female star took her out of bed in the middle of the night to change the size in order to look more beautiful. Su Peiqing always has crooked eyebrows and a charming smile, satisfying all their vanities with her bare hands. No one knows that a measuring ruler can measure not only the body measurements, but also the secrets hidden in the layers of clothes. An embroidery needle not only sews beautiful things, but also an intelligence network that can subvert the world. Su Peiqing walks on the tip of the knife, stealing secrets that determine countless lives and deaths in the shadows of her clothes and temples. She is like a spider lurking in the center of a cobweb, calm, elegant, and deadly. Until one day, the powerful and feared young marshal threw a piece of cloth in front of her. His eyes were deep, with a scrutinizing smile: "I heard that Miss Su's craftsmanship is unparalleled in the world, can you make me a 'watertight' shirt?" Su Peiqing stroked the cold and silky material, her fingertips trembling slightly, and her face still had a watertight smile: "Of course, as long as the price is right, I can 'make' whatever the young commander wants." - In this game with mountains and rivers as the bet, who is the hunter and who is the prey?