إنه يوم إطلاق لعبة الفيديو التي يترقّبها الجميع بفارغ الصبر. انضمّوا لكيريتو الذي سيبدأ رحلته في العالم الافتراضي لفنّ السيف.

مرّ شهر على احتجاز اللاعبين بداخل اللعبة. توفّي 2000 لاعب ولم يتمّ اجتياز الطابق الأوّل بعد

من أجل إنقاذ مجموعة من اللاعبين بالإضافة إلى أسونا، يُضطرّ كيريتو لاستخدام ورقته الرابحة

Armed with a large sniper rifle, Hecate II, the young girl Sinon is making a name for herself as the No. 1 sniper in GGO. When her squadron ambushes another squadron, she succeeds in taking out her first target. But when she takes aim at her second target, a robed “Behemoth,” he dodges the bullet.

Kyouji attacks Shino, saying he'll kill himself after she's dead. Kazuto saves her at the last second by jumping Kyouji. During the fight, Kazuto is hit with Kyouji's poison syringe, but miraculously it doesn't work and Kirito is saved. The next day Kazuto and Shino go to meet Kikuoka, and discuss the incident. Kikuoka has a message from one of the captured Death Guns...

Kirito and the others are tasked with subjugating the Frost King Thrymr, and a quest to recover Excalibur. It's Yui's guess that this isn't a quest planned by the game admins, but something automatically generated by the system. And if that's the case…