The apocalypse has come, order has collapsed, and I, Guo Chengxuan, a former deliveryman, have become the last courier in this city. My clients include: a former general who traded nuclear warheads for instant noodles, a mad scientist who experimented on living people, and an AI who always wanted to transform me into a mechanical girlfriend. Until I received that order - to save the world, the reward was... To resurrect my out-of-control first love?