A sudden change caused five people, including Heye, Mo Ling, and Sanqi, to fall into The Backrooms, an alien space composed of endless mazes and terrifying entities. From the yellow hell of Level 0 to the data abyss of Level 37, they encountered deadly threats such as Faceling and Smiler, and even discovered that the M. E. G. Organization, under the guise of the "Original Gate" plan, attempted to sacrifice wanderers to summon evil gods.
Five people accidentally awakened the power of the "key", each with their own unique skills, they formed a team and moved forward amidst betrayal and sacrifice. They traveled through strange levels such as the Mirror Corridor, the Void Library, and the Sea of Tranquility, deciphering the truth that the back room is the "mirror cage of reality", and faced the "Night Watch" who guards the rules and the original paradox.
This adventure across countless levels is both a battle against an evil organization and a journey to find the meaning of existence. In the end, they reconstructed the rules with emotional resonance, brought new life to the back room, and chose to stay and guard this alien space that was once a prison and finally became their home.
