A sudden cold wave struck, and the city fell overnight. When Zhang Su woke up, his neighbors had turned into zombies, and rescue and communications were completely cut off. Relying on a vehicle packed with food and drinking water, he led Zheng Xinyu and Zhong Xiaoshan to carve out a bloody path from the out-of-control residential complex. Facing hordes of corpses, fires, and human calculations, Zhang Su believed in only one rule—lock the door first, survive first. But when the broadcast sounded, they realized the real danger might not just be zombies.