Her best friend Lily died mysteriously, leaving Xiaoya with a bunch of blood-stained keys, forcing her to join a survival game that she couldn't quit. In abandoned hospitals, strange sanatoriums and mirror mazes, she not only has to fight against monsters in the shadows, but also faces the betrayal and calculations of other players.
When Xiaoya discovers that she can see cracks in space with her eyes and the key in her hand can open all "doors", she gradually comes into contact with the terrifying truth of the game: this is not entertainment, but the last ark of human consciousness after the end of the world. All copies are projections of the ruins of civilization.
Holding the key to connect the two worlds, Xiaoya stands at the crossroads of the ultimate choice - destroy the system and let 120,000 players face the reality of possible destruction; or risk everything to find a third way and rebuild hope and future for all lost souls in the cage of despair.
This is a cruel fable about memory, choice and reconstruction. When the rules of the game are written by you, will you let the world fall into the abyss, or will you personally light the first ray of light on the ruins?
