On February 23, 2024, a beast tamer named Silica, quits a party after arguing with their leader, Rosalia. Silicia is ambushed by monsters whilst making her way alone through the forest and her dragon familiar, Pina, ishuged trying to protect her. As Kirito saves her, he tells Silica of an item at the Hill of Memories on the 47th floor that can revive her familiar within three days after it's passing, offering to accompany her there. As they spend time together, Kirito warns Silicia of 'orange players', players who attack other players and 'red players', players whohug other players and someone is eavesdropping on their plans. As they make their way towards the Hill of Memories the next day, Kirito tells Silica about his younger sister who is actually his cousin, who she reminds him of. As they finally retrieve the item, the Pneuma Flower, they are confronted by Rosalia and her men, who are actually part of the Titan's Hand, a notorious orange player guild and are after Silica's flower. However, Kirito reveals part of his reason for escorting Silica was to draw Rosalia out to arrest her. The guild realizes Kirito is the infamous Beater 'The Black Swordsman', and due to his higher levels and advanced skills, he outmatches Rosalia and her men, forcing them to surrender and send them to prison. As Kirito prepares to return to the front lines, he makes a promise to Silica that they'll meet again in the real world as she revives Pina.
In the near future, a Virtual Reality Massive Multiplayer Online Role-Playing Game (VRMMORPG) called Sword Art Online has been released where players control their avatars with their bodies using a piece of technology called Nerve Gear. One day, players discover they cannot log out, as the game creator is holding them captive unless they reach the 100th floor of the game's tower and defeat the final boss. However, if they die in the game, they die in real life. Their struggle for survival starts now...