The deliveryman is bound to the "cross-time and space logistics system" and travels in both directions between the modern era of 2026 and the tenth year of the apocalypse. He follows the route of "mobile business + attribute enhancement". He does not build a large base, does not have a virgin, and the male protagonist has the attribute of being a talkative and funny person. He uses "professional habits + egoism" throughout the plot of the two worlds, forming a core concept conflict with the apocalyptic saint.