Shanghai in 1941 was like a corpse soaked in formalin solution, intact on the surface but already decayed on the inside.
The neon lights were still flashing in the night, and the jazz music in the dance hall continued all night long. Behind the glass window of the cafe, a woman in a cheongsam and a man in a suit sat opposite each other, smiling like flowers. But in these places where light and shadow cannot shine, some people have their throats cut in dark alleys, some are stuffed into sacks and sunk into the Huangpu River, and some make their last screams in the interrogation room before dawn.
This city has three faces - the revelry in the concession, the hardship and struggle in the Chinese community, and the silent strangulation in the underground world.
Japanese, Wang puppet agents, military lurkers, underground parties, concession patrols, speculators, refugees, spies... All kinds of people gather on this isolated island, and everyone is running for their own beliefs or desires. No one knows who lives next door, and no one dares to say that he can see the sun tomorrow.
Gu Yunshen was originally a bystander among these people. He is a reporter for the "Hujiang Daily". He has traveled to battlefields and seen death, and he thought he had a sufficient understanding of human nature. Until that night, he picked up an envelope at the door of the newspaper office.
There was a photo and a letter in the envelope.
In the photo is his brother, Gu Yunan, who has been missing for three months. There is only one sentence in the letter:
"He's looking for something, and now it's your turn."
