**The Storm of the Times**: In the Shanghai Concession in 1930, old and new cultures collided fiercely. Shen Mingyuan, a young doctor who returned from studying abroad, met Lin Peilan, the only daughter of a traditional Chinese medicine hall, because of an academic debate, starting a cultural collision spanning traditional Chinese and Western medicine.
- **Fateful entanglement**: Peilan went deep into an infectious disease area to treat workers. During the rescue process, Mingyuan discovered that the agarwood sign she carried with her was exactly the same as the family emblem on her mother's death relic, revealing the tip of the iceberg of the massacre of the Shen family, a prominent family in Shanghai twenty years ago.
- **Undercurrent**: Detective Inspector Lu Ziang of the French Concession has a special interest in Peilan. The yellowed case file in his hand contains the shocking truth about the Shen family murder case. The bloody dawn in the church bells is about to set off the grievances and hatreds of the three families.
