Li Xiang is an ordinary delivery rider, living in a subdivided apartment beyond Beijing's Fifth Ring Road. His biggest worries are platform penalties and bad customer reviews.
He has no idea that his secondhand electric scooter is actually a dimensional shuttle from an advanced civilization in the Lyra constellation that crashed on Earth thirty thousand years ago. Beneath the seat is a space-folding engine; inside the delivery box is an antimatter refrigeration system. Even the lock that never breaks is an entropy brake capable of locking down spacetime.
It all begins when he accepts an order to deliver food to "a haunted house somewhere in Chaoyang District." The customer is a pale, middle-aged man dressed in ancient robes. His note says, "Don't ring the doorbell. I'm working overtime. Just leave it on the table." Li Xiang steels himself and goes inside, only to find the man correcting bamboo slips beside a desk bearing an ID plaque that reads "Underworld, Third Bureau, Judge."
From then on, a hidden section appears in Li Xiang's rider dashboard: "Interdimensional Orders · Express Delivery · Life-and-Death Rush."
By day, he delivers milk tea and spicy hot pot to the living. At night, he brings late-night meals to underworld officials. Sometimes he even rides that battered scooter all the way to Alpha Centauri, carrying energy crystals powerful enough to blow up Earth in his insulated delivery box.
His on-time delivery rate, which has always been stuck at just 92 percent, suddenly becomes the only variable determining the survival of civilizations across the galaxy. Alien spies, interstellar wars, underworld bureaucrats, the Old Ones... every power is watching this delivery rider. Whoever controls the rider dispatch system controls the lifeline of logistics across the universe.
Li Xiang just wants to ask one thing: "Who gets blamed if it's late? Can I appeal?"