The story takes place in a famous and mysterious online game called Sword Art Online, where players play with their own lives, so a death in the game amounts to a real death. In this dangerous game, 10,000 people were imprisoned two years ago, where now only 6000 resist. The story goes with Kirito, one of the players to win the game, survive for all 100 floors, or stages of the game.
In the year 2022, virtual reality Massive Multiplayer Online RPG (VRMMORPG) Sword Art Online (SAO) is released. With the gear nerve, a VR helmet that stimulates the five senses user through his brain, players can try to control his characters in the game with their minds. However, an unexpected event occurs on November 6, 2022, when Akihiko Kayaba, the creator of MMO prevents players from leaving.
Akihiko sends them a challenge, if you want to be free and quit the game, they should reach the 100th floor of the tower of the game and defeat the final boss. Even so, if a death happens in the game equals a death in their bodies in the real world. As the game of 10,000 players tries to accept his new deadly situation, Kirito, a skilled player, who tested the beta version of the game, is determined to reach the 100th floor and be free. Along with Asuna, his partner and love interest, and his friends, Kirito and its allies will face many obstacles and discover the true purpose of the SAO. As the adventure continues, they will also participate in other games VRMMO too.