Paramount singer Baidie has a secret: what's hidden in the buckle of her cheongsam is not a drug, but a microfilm. That night she deliberately poured red wine on the Japanese major, but he grabbed her wrist and said, "Miss Bai's blue perfume is the same as my fiancée who died three years ago."
When she delivers information in dark alleys, her actions are always sabotaged by mysterious people. Until a certain mission failed, she saw the masked man who saved her taking off his mask - it was the major, and on his chest was a pocket watch that was exactly like her token of love.
"The code book invented by your father," he pressed her against the wall of the bell tower, "is hidden in every piece of music you sang famously."
The air raid siren sounded at midnight. Baidie opened the gramophone and found a Browning lying quietly inside.
"Tonight's song "Tuberose"," she pointed the gun at his heart, "the chorus part——"
"It's time for you to go out of tune."
When the bell struck twelve, the neon lights across the city suddenly spelled out Morse code:
Before dawn, I will love you forever
