Description：On the eve of the Liaoshen Campaign, the Northeast Field Army blitzed the counties outside Jinzhou and surrounded Jinzhou. An intelligence agent codenamed "Green Snake" was arrested, and Lin Xi, the chief of the Security Bureau, was ordered to go to Jinzhou to conduct a thorough investigation of the incident together with Zhou Yingqun of the Party Communication Bureau and Jiang Wei of the Second Department of National Defense. Lin Xi is actually a red agent, and his secret mission is to rescue "Green Snake" and help him hand over the Jinzhou city defense map to Dongye outside the city to support the attack on Jinzhou. Unexpectedly, there are undercurrents and many accidents in Jinzhou City. Facing the enemy's many traps, can Lin Xi successfully complete the task? The encounter with Xia Qing and his group is like a sudden intersection of an unrelated line on the one-way street of life, which seems to have made Lin Xi find a new direction to move forward. Where is his destination this time? In the darkest moment, what awaits him must be a bloody storm.