In 1929, Gu Qingyan, who graduated first from the London Women's Medical College, returned to Shanghai and opened a high-priced private clinic in the French Concession. On the surface, he is a famous foreign doctor who treats foreigners and wealthy businessmen. In fact, there is a radio station and an operating table hidden in the dark room of the clinic, and the medicine box is delivered with penicillin, which is urgently needed in the Soviet area. Her scalpel can save people, but it can also kill people. She suppresses all her emotions under the sterile gauze, because any flaw may cause the death of her comrades.
Shen Zhaoning is the daughter of Shen Boxing, a giant silk merchant in Shanghai. Her public identity is the eldest lady of the Chamber of Commerce and the director of a girls' school. She is passionate about "charity" and "education." What few people know is that she used merchant ships to smuggle medicines and equipment into the Soviet area, and obtained information from the wives of foreign consuls at balls.
A mission brings the two together. Gu Qingyan could tell at a glance that Shen Zhaoning was no ordinary lady - the way she held the pen and the way she glanced at the doors and windows revealed the aura of the same kind. From then on, the name of meeting in the clinic was to "regulate the body", but in fact they were working side by side to pass on information and coordinate the transfer.