A 'Game Over' will lead to a real death. 10,000 players are trapped in the first VRMMORPG available in the world. Connected via the Nerve Gear, a revolutionary system allowing them to experience complete immersion, they find themselves trapped inside Aincrad, a gigantic flying fortress that serves as a universe to the most incredible online game known as Sword Art Online. First part of an unforgettable heroic saga!