In the year 2022, the Virtual reality Massive Multiplayer Online Role-Playing Game (VRMMORPG) Sword Art Online (SAO) is released. With the Nerve Gear, a VR Helmet that stimulates the user's five senses via their brain, players can experience and control their in-game characters with their minds. But an unexpected event occurs on November 6, 2022 when Akihiko Kayaba, the creator of SAO, prevents the players from logging out. Akihiko issues them a challenge; if they wish to be free and log out of the game, they must reach the 100th floor of the game's tower and defeat the final boss. However, if their avatars die in the game, so will their bodies in the real world.
Now, locked in the world of Aincrad, you have only one hope to survive, and that is to win. Welcome to the first floor.