In Shanghai in 1941, rain and fog soaked into every corner of the French Concession. CCP undercover Shen Xiao lurks in Wang's pseudo-"No. 76", Walking on the edge of the knife in the guise of a speculator. An urgent piece of information about the "Qingxiang Project" involved him in the fatal mystery of the Huizhong Hotel - his connection with the liaison "Nightingale" was targeted by Li Shiqun, the chaotic shootout at the secret conversation site, and the sudden betrayal in the Zen room made every step on the line of life and death.
Just when Shen Xiao thought he had obtained the information and escaped, Nightingale's dual identity and the last note she left behind revealed a deeper mystery. Is it redemption or a new trap? The moment the train started, the figure in the blue cloth cheongsam on the platform was the end of the destination or the prologue of the next secret battle? On this isolated island, there are no permanent allies, only endless lurking and confrontation, and the spy war has just begun.
