In 1932, when the Battle of Songhu came to an end, Su Qingyuan, a female doctor who had returned from studying abroad, opened the "Chunze Clinic" in the French Concession, determined to use Western medicine to save lives and heal the wounded. However, she was repeatedly in crisis because she refused to treat Japanese military officers. During a late-night medical visit, she accidentally rescued Lu Jingyuan, an underground party member who was seriously injured after being chased by spies.
One is a doctor who wants to "keep himself safe" in troubled times, and the other is a soldier who is willing to "sacrifice his life for justice" for his family and country; one believes that "life has no borders", and the other insists that "family and country are above all else." The conflict of ideas when they first met gradually dissolved as they overcame difficulties together again and again - Su Qingyuan used medical skills to deliver medicines to Lu Jingyuan's organization and treat comrades, while Lu Jingyuan taught her to see clearly the truth of the troubled times that "doctors cannot be alone".
When the Japanese army seized the clinic and forced Su Qingyuan to develop biochemical drugs, and when Lu Jingyuan's identity was exposed and faced a city-wide manhunt, the two finally understood that their love had long been tightly tied to the fate of their country and their country. In the end, Su Qingyuan sneaked into the Japanese laboratory as a "pharmacist" to deliver intelligence, while Lu Jingyuan led his team to cooperate inside and outside to destroy the stronghold. When Shanghai was in deep spring, they held each other's hands tightly in the smoke of gunpowder, firmly believing that they could survive the troubled times and each other's future.
