Somewhere in Japan, late at night.
An underground facility called "Lieland" is disguised as an abandoned department store. One thousand meters underground, there is an arena that has never been exposed to the world.
Here are the beings with the ultimate "lying" ability - politicians, gangsters, diplomats, corporate elites... And those monsters who make a living by "seeing through lies".
In the "Discriminator Game", there is only one rule:
If you see through the lie, you survive.
If you are cheated, you disappear.
Today, a young man was brought here. He was not a born gambler, nor was he trained to commit fraud.
He just perfectly saw through the lies of 29 subjects in a university psychology experiment.
At that moment, the system started and he was selected——
"No. 0890, Candidate 'identifier', passed the preliminary screening."
In the darkness, a black and gold card fell at his feet.
[Qualification: Lie teller]