After the apocalypse came, an ordinary girl who managed to survive by guarding a corner convenience store discovered that the door of the store was connected to a strange world every night. She relied on transactions to gain life, and she also worked out the true source of the destruction of reality step by step.
After the global catastrophe broke out, urban order collapsed, and water, electricity, food and trust became scarce. The heroine Jiang Wu was originally just a shopkeeper, but on the seventh night after the disaster, she discovered that her abandoned convenience store would briefly connect to other worlds at midnight. Behind some doors are steam city-states, some are cultivation cities, some are mechanical wastelands, and there are also advanced worlds that appear to be civilized but have hidden hunting rules. At first, she just wanted to survive by buying low and selling high, saving herself and a few nearby survivors. However, as the number of transactions increased, she discovered that these worlds were not randomly connected, but were all related to the "door" behind the real doomsday. Each transaction was like the repayment of some old debt, each visitor carrying a fragment of the truth. The convenience store gradually transformed from a refuge into an information station, an exchange station and a center of competition. Jiang Wu also had to make a choice between resources, companions, external forces and higher-dimensional rules, deciding whether to close the door to all realms or re-sew the broken world.
The real refuge is not a high wall, but a person's ability to exchange trust, bear the cost, and re-establish connections in a broken order. The story repeatedly emphasizes that surviving is not the only answer. How to reconnect with others and the world determines what a person will eventually become.
