During the 22nd Century, science and technology had advanced beyond ethical bounds, so most of mankind reversed course. Eventually, global dictatorships violated the United Nation's Bioethics Treaty, secretly stockpiling arms. As a result, an oblivious America was attacked. Retaliation with augmented nuclear weaponry had unforeseen effects, affecting most survivors in the Western Hemisphere and altering the rest. Those infected became ravenous beasts, feeding off the remaining population. But pockets of humanity remain.
In order to support the Central Soviet Area in breaking the Kuomintang’s military "encirclement and suppression" and economic blockade, the Central Committee of the Communist Party of China decided to establish a red communication line from Shanghai to the Soviet Area via Hong Kong and Shantou. Zou Zuo Ren is the head of the Bogongao station of the transportation line. Together with other large, medium and small transportation stations, he is carrying out the top-secret mission of transporting personnel and scarce supplies to the Soviet area and also transporting funds and intelligence from the Soviet area to the Shanghai Party Central Committee. Under the leadership of Zou Zuo Ren, the traffic men battled wits with the enemy.