On the eve of the Songhu Battle in 1937, under the peaceful appearance of the French Concession in Shanghai, there was an undercurrent. The Japanese Consulate in Shanghai used the name of the "China-Japan Cultural Exchange Reception" to win over the business community and plan arms transportation in an attempt to accelerate the invasion of China.
Shen Zhiwei, the owner of the "Jinxiu Pavilion" embroidery shop, uses her gentle identity as an "embroidery beauty" in Shanghai as a cover, but is actually the "Embroidery Lady" who is the liaison officer of the "Hongyan" group of the underground party of the Communist Party of China. She needs to obtain key information about the Japanese arms ship "Sakura Maru" from Zhang Jingzhi, president of the Chamber of Commerce, to prevent deadly arms from reaching the front line.
In the process, she unexpectedly crossed paths with Lu Chengze, a businessman who studied abroad. This seemingly gentle factory owner was actually secretly delivering weapons to the Eighth Route Army and was also a potential ally of the military. From mutual testing to tacit cooperation, the two gradually uncovered the Japanese conspiracy during the night banquet at Paramount, the thrilling encounter in the embroidery room, and the life-and-death rescue at the consulate. They also discovered that thirty patriotic students were still detained on the "Sakura Maru".
As the date of the "Sakura Maru" docking at Wusongkou on July 9th approaches, Shen Zhiwei and Lu Chengze, together with countless patriots, use embroidery needles to hide secret messages and use courage to defeat murderous intentions. They weave a dark web to protect the mountains and rivers at the edge of the beacon fire, vowing to regain the hope of the Chinese people before artillery fire engulfs their country.
