A new MMORPG virtual computer game has swept the nation, and the majority of the world is playing it. Disappearances have become suspiciously frequent around Higure High and rumors have spread like wild fire all accusing the game of being the reason behind them. Detectives obviously shrug that theory off automatically. The son of a local detective, transfer student, Hayate Hattori, decides to take on the case himself. He gathers a few new friends in the process, coming to realize that the characters he'd been associating with online are closer than he thought they were. Together the group of students will attempt to find out what's causing the sudden disappearances of their classmates who all ironically were Shi no Tenshi players.