Lin Shi, a part-time courier, discovered that the storage box of his second-hand electric car had become a passage connecting the "time gap". Each express delivery number corresponds to a space-time coordinate, and the time flow rate in the box can even be adjusted to one percent of reality. While he was running around collecting time fragments to resurrect his girlfriend, he accidentally stumbled upon a university laboratory that was mass-producing "time orphans" with independent consciousness - those fragments of time that had been stripped away. Every time 100 orders are completed, the system will create a space-time rift, and only the bioelectrical signal when the customer signs for it can calibrate the dimensions. Faced with the huge temptation to resurrect his beloved and the ignorant eyes of the time orphans seeking survival, Lin Shi fell into an ethical abyss. He gave up his selfish desires and teamed up with the talented physicist Zhong Yuwei to transform the fragments of time into space-time probes to protect reality, and ultimately promoted the birth of the "Public Administration of Time Resources", turning small express boxes into dams that guard the long river of time and space.