In Shanghai in 1937, I, {Lin Jinghong}, was a hot-blooded young man on the street. However, due to an accidental rescue of the cryptographic expert Su Qingyuan, I was involved in the whirlpool of the espionage war between the Kuomintang, the Communist Party and the Japanese army. I have a natural photographic memory and can memorize all secret messages, and can predict the battlefield to avoid life and death crises. I relied on this ability to repeatedly foil the Japanese conspiracy. But the Japanese spy Takahashi Hikoichi keeps a close eye on me. He sets traps, steals information, and opposes me everywhere. When Shanghai fell, I escorted Su Qingyuan to decipher the secrets of the Japanese army, fight against high bridges, and disrupt the Japanese army's deployment. Amid political undercurrents and social changes, he transformed from a street boy into a spy war legend, vowing to get the invaders out of Shanghai!
