When broke gamer Jayden Carter accidentally triggers a hidden debug mode in his favorite VR game, he gains access to a mysterious System that rewrites the rules of reality. Suddenly, magic is real—but so are the monsters crawling out of his screen. Labeled Player Zero by the System, Jayden discovers he’s the last Chaos Mage in a world where technology is failing, cities are collapsing, and a cryptic alien message warns that humanity has 90 days to pass its "final test"… or be erased.
With a snarky AI companion, a shadowy cabal of billionaires hunting him for his power, and a corrupted rival player who knows his every weakness, Jayden must level up his forbidden magic before the world unravels. But as the line between game and reality blurs, he faces an impossible choice: save humanity by merging with the System, or stay human and let billions die.