Zenno, a master gamer, has been offered the chance to play the newly-released game, Expers. But when a naked girl appears in his classroom to give him his Expers Suit, complete with real superpowers, he learns that Expers is not just a simple computer game — it is a real-life kill-or-be-killed PvP (Player versus Player) game. Only the main character of the game can survive until the end — but who is the main character? And, perhaps more importantly, who is controlling the game?