After delivery boy Su Qi delivered his last order on a rainy night, his phone inexplicably had an APP that could not be uninstalled. After clicking on it, his world collapsed and reorganized - in the order evaluation column, the customer's message was not "Thank you" or "Bad review", but written in small blood-red letters: "The alley you just passed by had a fight between warriors three hours ago. The remaining fist power is still there. It is recommended to go around." Looking up at the city, the neon lights are still there, but something seems to be crawling in the shadows of the tall buildings. As for the destination of the next order, the navigation display is "Mass Graves in the West of the City, next to the seventh row of tombstones, pick up on arrival."