In extreme fear, an ordinary repairman awakens to the ability of "absolute voiceprint cloning" - he can copy any voice he has ever heard, and the language, intonation, oral habits, and breathing frequency are all authentically restored. At first, he could only use this ability to imitate dead people to avoid being hunted. Later, he discovered that all the core decisions of the Japanese army were made through phone calls and oral orders. He had to use one mouth to build a "voice intelligence highway" behind enemy lines - transmitting intelligence, issuing false orders, and even pretending to be a senior Japanese military officer to tamper with the battle plan in public during meetings. Every time he opens his mouth is a matter of life and death, because once his abilities are exposed, he will become the hunting target of all spy organizations in Asia.
