In search of your older brother's whereabouts, you join the online RPG, “Arcadia” in search of clues. Having lost consciousness after being drawn into a mysterious light, you wake up within the game's fantasy world! Confused and shaken by your strange yet familiar surroundings,you learn that the only way to escape this world of life-or-death is to clear the game. As the gameworld begins to crumble and fall apart, you gain the status of the “Shinken” (divine sword), key to clearing the game, and become targeted by hordes of enemies.