In the not-too-distant future, the world is suddenly enveloped by a mysterious force. Every full moon night, tens of thousands of people randomly disappear around the world and are forcibly pulled into an infinite space called the "Corridor."
The Corridor consists of countless worlds with strange rules, each with its own unique survival rules and deadly traps. Participants must crack the rules and complete challenges to survive and accumulate "rule points", which can be used to redeem "freedom certificates" for time in reality, superpowers, or escaping from the corridor.
It is said that collecting nine freedom certificates can completely escape the corridor, but no one has succeeded so far. The loser will either die in the rules world or run out of points and be completely erased from existence.
