The nuclear bombs dropped and the world became a wasteland. Luo Heng opened his eyes and found himself standing at the door of a shelter that was about to collapse - resources were exhausted, zombies were sieging the city, and the system indicated that the survival time was less than 24 hours. On the verge of life and death, he accidentally activated the "Shelter Management System": as long as he collected resources, he could unlock black technology, expand dungeons, and unlock hidden troops. While the survivors outside are still fighting for a mouthful of clean water, Luo Heng's shelter has been connected to electricity and internet, growing fresh fruits and vegetables, and even organized an armed convoy. While others were chewing tree bark and hiding from mutant beasts, he was drinking Coke and driving a tank to collect survivors. Owning a shelter in the wasteland is equivalent to owning the entire world.