Zhong Ziran, codenamed "Nightingale," lurked behind enemy lines for three years. On the eve of his successful retirement, a top-secret list was leaked, making him the target of public criticism. The person who pointed the gun at him was actually Jiang Yaxi, his partner who had shared life and death with him. When trust becomes the most deadly trap, he must find the real betrayer in the fog and complete the final victory.
