Programmer Su Yan woke up and found that the entire earth had turned into a huge holographic version of "Fantasy Westward Journey" that could not be exited. Demons are rampant, data has been transformed, and the once urban jungle has become a novice village and advanced training area. While everyone was panicking about how to kill monsters and upgrade them, Su Yan smiled as he looked at the familiar UI interface in front of him and the personal game panel with the hidden "probability accumulation" cheat that had traveled with him. Su Yan thought this was just a cheating single-player game, until he triggered the hidden mission that was not even recorded in the official guide, and step by step revealed the chilling truth behind this "game world"...