In 2010, countless people died in the dream world.
The dream of deep sleep is too beautiful and cruel... So people are unwilling to return to reality or are swallowed up by the fear of death, and die in their sleep.
2012,
An instrument invented by Country W to protect people's sleeping brains was officially put into use.
The dream is set up like a game.
If there are automatic virtual NPCs inside, as well as real-life people who enter the same dream.
So, what are the chances of meeting someone who has had the same dream?
The answer is,
One in a billion.