The smashed second-hand mobile phone of social worker Zhao Yan exuded a bloody glimmer. When he opened his eyes again, he was already standing on Zhuque Street in Bianjing in the Northern Song Dynasty. Dressed in jeans and a T-shirt, he became an outlier on the street. What's even worse is that a countdown in red words suddenly popped up on the black screen of his mobile phone - if the "key" cannot be found within 72 hours, he will be stranded in this strange dynasty forever.
He wanted to keep a low profile and save his life, but he saw his portrait plastered all over the city wall: "I invaded Zhao Yan, collaborated with the enemy and treason, and was rewarded with a thousand taels of silver." A stranger, a young man named Awu, suddenly appeared to recognize his family. The jade pendant in his pocket was exactly the same as the light pattern in the crack of his cell phone.
The county magistrate's interrogation, the tracking of mysterious forces, the strange high fever in the young man, and the constantly updating mission reminders on his mobile phone... Zhao Yan discovered that this time travel may not be an accident. When the survival wisdom of the modern social animal collides with the turmoil of the Northern Song Dynasty officialdom, he not only has to find the key to go home within 72 hours, but also needs to figure out: Who is the "imperial convict Zhao Yan" eight hundred years ago?
And why did the dark figure who was always watching in the dark look at him as if he were looking at an old friend who "should have existed"?
