After surviving the Sword Art Online ordeal, Kazuto Kirigaya finds himself drawn back into the virtual realm when a disturbing incident unfolds in Gun Gale Online. Teaming up with the sharpshooter Sinon, Kirito dives into a dangerous game to uncover the sinister player known as Death Gun. As they navigate through past traumas and competing in a deadly tournament, they race against time to prevent further real-world tragedies. In a risky bid to outwit Death Gun, Kirito risks everything, knowing that in this virtual battlefield, the line between life and death is razor-thin.