Paramount's top dancer Bai Lu used champagne and tango as a cover to complete the code deciphering amidst the aroma of makeup and powder. Rose perfume became her fatal secret to contact the military commander. A neon account book recording the movements of the Japanese fleet suddenly appeared in the dressing room, implicating private transactions between the Japanese military attache and the French consul. At a tango party, the knife of a dancer's shoe cut open the inner pocket of a navy uniform. The French Concession patrol officer patrolled the French Concession and the scent of his old lover's perfume lingered in the Japanese consul's suit. The cruise ship banquet invitation contained cyanide powder. The waltz under the crystal chandelier conceals murderous intent.
The Huangpu River cruise ship detonation plan was launched, and the detonator fuse in the slit of the cheongsam flashed simultaneously with the pocket watch timer. When the fleet defense plan was reduced to ashes, Bai Lu jumped into the undercurrent of the river.
