In 1937, Shanghai fell. Ordinary policeman Guo Yisheng accidentally crossed over and became a small spy of Japan's Puppet No. 76, And was bound to a mysterious "Red Intelligence System". The system constantly releases tasks, rewarding rich spy skills - but each task forces him to choose between "survival" and "conscience". If he disobeys, the system will deduct his lifespan; if he obeys, he may become a real traitor.
What's even weirder is that Guo Yisheng discovered that there was a huge conspiracy of another time traveler "Zhuang Zhou" hidden behind this system. Zhuang Zhou tried to rewrite history by controlling key information, and Guo Yisheng was just Experimental Subject No. 99.
In the spy games again and again, Guo Yisheng used system loopholes to kill his opponents, growing from a chess piece to a person who controls the chess game. He battles wits and courage with the enemy and puppet spy Li Moqun, has an ambiguous relationship with the Japanese female officer Sato Yuriko, and turns from an enemy into a life-or-death acquaintance with the lurking Dr. Su. In the end, he must make the ultimate choice - destroy the system, or use the system to protect the true history?
When virtuality and reality are intertwined, and beliefs and instructions conflict with each other, who is the chess player and who is the chess piece?
