After a battle to the death with Heathcliff, Kazuto Kirigaya, a.k.a. Kirito, returns to the real world.
Although the other survivors of the death game also make it back home, 300 of the players, including Asuna, have yet to regain consciousness, and are still comatose.
Two months later, Kazuto heads to the hospital to visit Asuna - Asuna Yuuki - where he meets two other visitors, Asuna's father, Shouzou, and Nobuyuki Sugou, who works for him.
Learning that Sugou plans to wed the comatose Asuna in a week's time, Kazuto...