In Shanghai in 1935, in order to fulfill his father's last wish - to design a theater integrating Chinese and Western styles, Lin Zhiwei sneaked into the "Gu Mansion" in the French Concession to steal the drawings, but was caught on the spot by the owner Gu Huaisheng. Gu Huaisheng threatened to "burn her collection of Republican architectural models" and forced her to stay as a private architect. In the process of renovating the old house, the two tested each other and gradually fell in love: Lin Zhiwei discovered that Gu Huaisheng's study had a map of the occupied areas in the Northeast hidden in a secret room, while he found her contact code with the anti-Japanese underground organization in the mezzanine of the theater drawings she designed.
When Japanese spies targeted the Gu family's arms business, Lin Zhiwei used her architectural knowledge to help him design an escape passage for a secret room, while Gu Huaisheng risked his life to send her on the last ship to Hong Kong. On the eve of departure, he pinned an jade brooch engraved with "Shimmer" on the collar of her cheongsam: "The color is like yours, it looks soft, and it can burn through the night when burned."
