The situation in Shanghai is treacherous. Shen Ruohan, the owner of a cheongsam shop, looks gentle on the surface, but is actually an underground party intelligence agent who embodies the righteousness of his family and country. She used her exquisite embroidery skills to deliver top-secret information, but during a crisis, she unexpectedly clashed with Gu Yanting, a ruthless military agent who was ordered to investigate the underground party. Gu Yanting pressed forward step by step, but was deeply attracted by Shen Ruohan's wisdom and courage, and the balance of faith began to tilt. The leader of the Japanese secret service, Yamada Yuichi, was eyeing the situation and set many traps to put Shen Ruohan to death. Gu Yanting secretly helped him again and again, but this also pushed himself into the abyss. When Shen Ruohan learned Gu Yanting's true identity, the choice between family, country and personal emotions tore her apart. In the end, in order to protect vital intelligence, Gu Yanting chose to sacrifice in the hail of bullets, paving the way for her with his life. Shen Ruohan tearfully took over his unfinished mission, transformed into an "unsung hero" under the cheongsam, and fought for faith and rebirth in the troubled times filled with gunfire!
