In the twenty-sixth year of the Republic of China, countless secrets are hidden in the rainy alleys of the foggy city of Chongqing. On the surface, he is a small employee of a foreign company, but in fact he is a lurker walking on the edge of a knife. There is no thrill of tearing the enemy apart with your hands, no stunts of flying into the sky and escaping from the ground, only the caution of taking every step and the belief hidden deep in the heart.
He has to deal with the overt and covert struggles in the trading house, and has to deal with the triple spy of the military commander, the central commander and the Japanese spies. He also has to quietly pass on information and instigate rebellion goals in his trivial daily life. An innocent chat may contain murderous intent, and a voided bill may be a life-saving straw.
He has seen the horrors of his colleagues after being exposed, and has been jealous of his allies. He even has to put on a smile when facing his enemies. There was no halo attached to him, only the fear and struggle of mortals. But whenever night fell, looking at the lights of the mountain city, he would hold the secret message hidden in his sleeve tightly - no matter how dense the darkness was, it could not block the glimmer of light. This is a war without gunpowder. He is the most inconspicuous hidden piece on the chessboard, but it can influence the direction of the entire war.