Nine keys open nine doors to the abyss.
The person who enters the door dies behind the door and completely disappears from reality - no one remembers it, as if it never existed.
Each door has game prompts, and you must follow the rules to pass the level.
The props behind the door can be taken out, but can only be used once.
The further back you go, the more difficult the door becomes and the more people die.
The killer Hao Hao, codenamed You Zhun, accidentally obtained the first key during a mission.
He was pulled into this life and death game, only to discover——
In Lin'an City, he was not the only one entering.
There are nine doors on the surface, but there is actually a tenth door.
No one ever goes in, and no one ever comes out.
What's behind the door?
Prosperity and wealth? Another world? Or - the truth that makes those who enter the door disappear completely?