There is a survival game with a system for everyone, plus infinite flow.

Everyone, regardless of age or ability, has been teleported to the world of elevator survival.

At the beginning, there is only an elevator and nothing else.

There was an electronic synthesized voice called the official game voice saying that to survive, they must explore a new floor every 12 hours.

However, at midnight, he discovers that he can see information about the floors. There is a message that says, "The elevator is going down. Please hold on tight. The next floor is a toilet. There are no valuable resources here, but you can collect water from the tap, which is relatively clean.