The end has come and the world has turned into a gray hell. When Lin Ke was on the verge of death while being chased by monsters, he accidentally broke into a dark red wooden door that appeared out of thin air and became the administrator of the mysterious "Crimson Apartment". Here rules are paramount, safety is strange, and rent is actually fragments of emotions, memories and even abilities. Faced with all kinds of dangerous residents and the unpredictable will of the apartment itself, Lin Ke must survive on this doomsday island, learn to use rules, balance rent collection and order, and at the same time explore the ultimate secret that connects the apartment to the truth of the doomsday. When the administrator's code turns to the last page, he will face an abyss more terrifying than the monster outside the door.
