In Shanghai during the isolation period, the declining scholarly daughter Shen Lingyi married the financial tycoon Huo Huaijin due to a family marriage. In a loveless marriage, the two respected each other like ice, each carrying their own misunderstandings and guarding against each other. This was the first dilemma that she did not want to succumb to fate and he did not dare to reveal his true feelings. By chance after marriage, Shen Lingyi discovered a secret radio station in Huo Huaijin's study, uncovering the truth that it was secretly sponsoring the anti-Japanese war. Huo Huaijin also accidentally discovered her ability to decipher codes. The two faced a second dilemma of whether to put aside their suspicions and join forces to put themselves in danger. Since then, the two have been pretending to be in front of the enemy, using quarrels to convey information and love to hide their actions. Under the double pressure of business war and espionage war, their love for each other has quietly grown. However, because of the righteousness of their family and country, they dare not express their love lightly, and they fall into a third dilemma where love and responsibility cannot be reconciled. When the anti-Japanese action of the two was about to be exposed, the Japanese army laid a dragnet. Huo Huaijin wanted to send Shen Lingyi away with her only ticket, but she tore up the ticket and chose to accompany her life and death. This feeling tempered in the national crisis finally transcended personal safety. The moral premise of the story has always been: sticking to the righteousness of family and country first will eventually allow the sincerity to recognize each other, and personal love can also be integrated into the feelings of the greater self. The two finally chose to stand side by side on the front line of the Anti-Japanese War, using their own wisdom and courage to protect their home and country in their hearts in the undercurrent of Shanghai.
