Ten years ago, the world was divided into different domains without anyone noticing. Ordinary people live in the covered ordinary domain, thinking that the city is still intact; but the awakened ones can pass through the fault barrier and enter the high-level domain with higher resources and deeper rules.
Lu Beichen is just an ordinary courier at the Jinghe District Express Station, delivering packages, sorting, and checking orders on a daily basis, leading a humble, low-level life. Until a package with a printed date from the future appears, a non-existent entrance to an underground shopping mall appears, and a post-it note written in his sister's handwriting drags him into the truth of the fault that has been hidden for ten years.
He has a rare eye for rules. He can see the rules behind the world and see through the traps carefully set up by others. The high-level domain awakeners crushed him with levels, the Pioneer Alliance hunted him with rules, the ordinary domain leaders tried to take advantage of him, and his sister Evelin kept leaving tests deep in the mist.
Everyone thought that Lu Beichen was just the chosen pawn.
Until he saw through the chessboard itself.
This is a game about cognition, rules, identity and the underlying protocols of the world. Lu Beichen wants to advance from the ordinary domain to the high-level domain, decipher the real conspiracy behind the fault phenomenon, find his sister who has been missing for five years, and redefine the order of the two worlds.