It's been 2 years since the players of Sword Art Online were first trapped in this life-or-death adventure. As Kirito and Asuna get closer, Asuna starts to want distance from the Knights of the Blood, but her wish does not come easily. The Assault Team launches an attack on the 75th floor boss, but they find the Skull Reaper to be an extremely tough foe! Meanwhile, Kirito begins to feel suspicious of Heathcliff's actions...