The two became acquainted at a silk fair. Gu Yanqing was attracted by the unique patterns in Su Wanqing's embroidery, but Su Wanqing mistakenly recognized him as an accomplice who abducted his younger brother. From misunderstanding to temptation, they gradually get closer amidst the malicious price reductions of foreign companies and the despicable frame-up of their peers. In order to protect Su Wanqing, Gu Yanqing placed her in his abandoned dyeing workshop, but he didn't know that it was the place where his ancestors stored the jade pendant.
As the investigation deepens, they discover that the forces behind the disappearance of their brother overlap with those behind the Silk Code. Under the shadow of the Japanese army's increase in troops in Shanghai, Gu Yanqing faced the choice between family business and national justice, while Su Wanqing had to choose between saving his younger brother and protecting the national treasure embroidery tree. When the two jade pendants are put together, not only the friendship between ancestors is revealed, but also a shocking secret that can shake up the concession structure.