In the late period of the Anti-Japanese War, Shanghai was undercurrent. Li Dakui sneaked into the Secrecy Bureau under the pseudonym "Li Wei", and Liu Bixue was dormant in Renji Hospital as a doctor. The two were like two sharp blades, hiding in the heart of the enemy camp.
They used the makeup code in the cafe and the Morse code under the stethoscope to convey information, and dealt with the clues in the filing cabinet and the life and death moments of the poisoned banquet. The shadow of the "Pan Rock Project" shrouded Shanghai, and Zhang Xiaolin's suspicion followed closely. The betrayal of insiders and the sacrifice of comrades followed one after another, and every step was stepped on the tip of a knife.
From the victory of the Anti-Japanese War to the trumpet blowing of the War of Liberation, they proved each other's innocence under the gunpoint of the interrogation room, and broke out back to back in the light of the explosion. When the red flag was finally planted in the customs building, the films hidden in the rouge box, the passwords on the inner pages of the Bible, and the code names on the unnamed tombstones all turned into the brightest sparks before dawn - this is an espionage epic about loyalty and rebirth written by lurkers with faith and sacrifice.