Against the background of a doomsday ruins, the sunset was like blood, and the entire sky was dyed dark red by flames and thick smoke. The protagonist Gao Chuan stands in the middle of an abandoned street, wearing shabby but tough equipment and holding a blood-stained fire ax in his hand. His eyes were determined, and behind him was his sister Gao Yao, nervously holding a cracked photo frame. Around the two of them, hordes of zombies stared at them with gray eyes, and the atmosphere was so tense that it was suffocating.