The story does not directly continue from the first book. Twenty years later, the game Neuro has been upgraded to a metaverse-level experience. Players can live an entirely different life in the game, and can even log in directly using brain waves. In real life, artificial intelligence has also become inseparable from human life, and the two coexist in harmony. Everything seems wonderful, but human nature remains complex, unpredictable, incomprehensible, and unforgivable.