A virtual reality gaming system known as the "Nerve Gear" is finally released to the public alongside the world's first virtual reality game called "Sword Art Online" (SAO). Kirito, one of the game's beta-testers, logs-in to Aincrad, the world of SAO and quickly befriends novice player Klein, to whom he teaches the basics of the game. After a few hours, Kirito and Klein discover that they cannot log-out. Akihiko Kayaba, the game's creator, announces to the players that he intentionally removed the log-out option and told all player will die if the Nerve Gear is forcefully pull out or health bar is depleted to zero in the game itself, only way to escape is to beat and clear all 100 floors of Aincrad. If they die in the game, their real bodies will perish as well. (Source: Wikipedia)

Aired on: 7/7/2012