In the thirteenth year of the apocalypse, the last human city, Dome Harbor, was surrounded by the Gray Tide. Jiang Jin, a maintenance worker searching for his missing younger sister, entered a forbidden zone from which no one had ever returned. Isolation doctor Tang Jianxing discovered that the monsters beyond the city walls were not the real enemy. Pei Zhaoye was ordered to hunt down Jiang Jin, Ning Yi deciphered messages left behind on the old network, and Qi Xuan offered to guide them while concealing a deal of his own. Deep in the forbidden zone, a colossal tower capable of restarting civilization was also counting down to the extermination of the last humans.
