On September 15, 2024, the "Evolution Day" event broke out simultaneously around the world. Ordinary people awakened with supernatural powers, while the "Wastelanders" who failed to awaken became bloodthirsty monsters. The protagonist Wu Zheng, an ordinary white-collar worker, escaped the first wave of mutations because he worked overtime. He accidentally discovered that the old shabby little rental house he rented turned out to be the ultimate safe house left before the "Evolution Day". This seemingly ordinary room can continuously unlock new functions and areas by absorbing the crystal cores of external monsters. But when Wu Zheng thought he had a foundation, a supernatural organization called "Oracle" found him. They claim to "conquer" all safe houses, but in fact they want to control these only refuges in the apocalypse. Wu Zheng was forced to form his own team of survivors under the supervision of the "Oracle" and constantly explore the evolutionary limits of the safe house. However, as the safe house was upgraded, Wu Zheng gradually discovered a terrifying fact - the real owner of this safe house was not him at all, but a mysterious person who had planned it since before the "Evolution Day". The evolution of all safe houses is ultimately just to bring "him" back. Wu Zheng must face the dual pressure of the "oracle"'s pursuit and the monster siege, and seize the ultimate control of the safe house before the mysterious owner returns.
