Ethan, an ordinary high school student, has always been the school's doormat—timid and bullied. No one knows his secret identity as Zero, the top-ranked level 100 assassin who has dominated the dark web for years. A sudden system bug forcibly seals his level, and at the same time, a global apocalypse RPG open beta launches, pulling the entire campus into a game space overrun by monsters. The system issues a life-or-death mission: Ethan must reach level 10 within one hour to break the seal; otherwise, both his account and his physical body will be erased.
