Aincrad is a real place where people have been forced to stay in after it was found. However deep inside the crust of this new world lay foul creatures and dungeons, thus the King of Aincrad challenged warriors to complete the 100 floors to receive admin status or the sword of Excalibur... However a mysterious man known to hold the Sword of Death has graced the challenge and murders anyone in his path, however his main goal is to kill Kirito...