In 1927, the Shen family silk and satin shop in Shanghai was jointly plotted by a Japanese company and a local comprador. Shen Qingyan, the daughter of a family whose family was ruined, unexpectedly activated his ancestral "Yunjintong" ability - he could sense the origin of raw materials and weaving defects by touching silk, and even read the past memories carried by the fabric. In order to take revenge and protect her family's centuries-old weaving skills, she entered a rival company incognito and established a foothold in the male-dominated textile industry with her talent of "silk identification".
During this period, she met Lu Zechuan, who appeared to be a consultant to a foreign company but was actually an underground party member. The two tested each other and fought side by side: she used "Yunjintong" to see through the Japanese army's conspiracy to use inferior fabrics to make military uniforms, and he used his identity to pass information to her and avoid crises. As the war approaches Shanghai, Shen Qingyan not only has to fight against the deadly suppression of business rivals, but also has to choose between family hatred and national justice. Finally, he leads the Shanghai weavers to form a "weaving defense team" to support the front line with special fabrics woven stitch by stitch, turning Jiangnan silk into "invisible armor" in troubled times.
