“The World” is a popular role playing game played by millions around the world. However, one player, Tsukasa, is very unique. It appears that he is not actually at a computer; his consciousness is trapped in the game! Together with a group of people who become his friends, he must unravel this mystery if he is ever going to return to the real world. And, to make matters worse, Tsukasa is connected to some very unusual events. It soon becomes clear that it isn't just a game; it’s a matter of life and death.