In the tenth year of nuclear winter, the once prosperous cities have been reduced to radioactive wastelands. Mutated creatures are rampant in the ruins. The remaining humans are struggling between resources and survival. Former engineer Zhao Yilong accidentally activated the "Dragon's Nest" smart shelter core left behind by his grandfather while searching for supplies. This shelter buried deep in the ground not only has a modular unlimited upgrade system, but also contains secret clues about the destruction of the old world.
In order to protect his surviving relatives and partners, Zhao Yilong used the shelter as a foundation, collected wasteland resources to unlock defenses, purification systems, cultivation cabins and other functions, and built it into an impregnable "Dragon's Nest". He led his followers deep into the radiation zone to explore the ruins, engage in a life-and-death race with the Predator convoy, and compete with the mysterious organization that mastered the technology of the old world. From a simple bunker that can only accommodate a few people, to an underground city-state that can shelter thousands of people, to the spark of a new civilization emerging from the radiation dust, every upgrade Zhao Yilong makes lights up hope for humans in the wasteland, and he gradually discovers that the ultimate upgrade goal of the "Dragon's Nest" is closely related to the restart of human civilization.
