Delivery boy Lin Dali relies on the mechanical watch left by his parents to travel through time and space such as London in 1899, Chongqing in 1972, and Dunhuang in 1962, delivering items to customers in different eras. He used his emotional energy to fight against time and space parasites, repair the wrinkles in time, explore the truth about his parents' disappearance while completing orders, and deliver hope and warmth.
