A strange doomsday has arrived suddenly; monsters hunt by sound in the dark night. Survivors have only one loaf of bread and one bottle of water, huddling indoors, struggling to hold on amid the sound of monsters smashing doors. Chen Hansheng accidentally awakens a dual-system: by forming a bond with beauties and taking in female survivors, he can receive critical-hit supplies, fully upgrade talents, and items will evolve along with the house itself. Others fight desperately for half a plank to survive, but when he takes in the school flower and a sickly young girl, spiritual fields and massive supplies come one after another. Outside the door is hell on earth; inside is a safe, comfortable fortress. Yet as he keeps expanding his safe house, something far more terrifying and strange is quietly setting its sights on this doomsday paradise.