Ace agent Lin Chen traveled through the Republic of China and sneaked into the core of the puppet Manchukuo regime. He was caught in the first dilemma of "lurking to survive and save himself" and "exposing his identity and killing the traitors"; he intercepted the top-secret plan of the Japanese invaders to invade China and was faced with "passing on information". The second dilemma of "reporting and exposing the organization" and "concealing intelligence and watching the country's loss"; he instigated a rebellion against the senior officials of the Kuomintang military command, and faced the third dilemma of "joining forces to guard against assassination" and "parting ways and missing the anti-Japanese allies". The story is based on the moral premise that "the honor and disgrace of personal life and death should give way to the righteousness of the survival of the nation." In the life-and-death games and intelligence secret battles, Lin Chen relied on the top qualities of modern agents to tear apart the conspiracy network of Japanese invaders and traitors, leverage the direction of history, and fulfill his oath to rewrite the destiny of China with blood and wisdom.