The concessions after the fall of Shanghai contained undercurrents from various forces. He was originally a jobless vagabond who was just hanging out and waiting to die. He had no ambition and just wanted to survive. However, due to a drunken accident, he was mistakenly identified as "one of his own" by Japanese agents and dragged into the gendarmerie. What's even more outrageous is that our underground party also misjudged him as a potential colleague and handed him encrypted information. He has no strength in his hands, doesn't understand the code, and can't even hold a gun firmly. He can only rely on his talk and the luck of a blind cat to kill the mouse in the wolf's den. Secrets were intercepted by accident, and the enemy's plans were sabotaged in an inexplicable way, causing a dangerous espionage war. Faced with a ruthless spy leader, a cold real agent, and a crisis that could explode at any time, he adhered to the principle of "you can lie down but not stand, you can hang out but not fight". However, in the ridiculous attempts to survive, he changed from a useless person despised by everyone to a "mysterious chess piece" that both the enemy and us can't figure out. See how he uses the most useless method to find a unique way to win the spy war in the light of swords and shadows.