Chen Mo is a night courier who shuttles through the streets of the city from 12 am to 6 am every day. Late one night, he received a strange order: the delivery address was the "Xingfuli Community in the Old Town" that had been demolished for five years. What's even weirder is that the system shows that the recipient's name is "Zhao Xiaomei", and the note reads "To myself five years ago." Chen Mo thought it was someone's prank, but when he drove his electric bike towards the ruins by mistake, his life deviated from the normal track. He began to discover that there seemed to be another group of "residents" active in the city after three o'clock in the morning. And the express delivery order in his hand became a mysterious passage connecting the two worlds.
