In a snowy environment, Yuna sits with Eiji as a shooting star passes.
Yuna: Wow! It's amazing! Tomorrow's the big day, Eiji. The day that my dream of singing in front of a huge audience comes true.
Eiji: Are you nervous?
Yuna: Nope. I've actually sang to many people which was a small audience. I even got to enjoy myself when doing so. That's the place where I will be the number 1 diva, right?
Eiji: Absolutely. Soon you will be number 1, once and for all.
Yuna: Hey, can you read me that book again?
Eiji: Sure.
Eiji takes out the SAO Incident Report book and reads it to Yuna.
Yuna: So, where are you in this book?
Eiji: I'm not in it. Those of use who couldn't fight aren't worth remembering. I couldn't fight back then, because I was too scared.
Then, Eiji gets a call from Shigemura and the entire environment changes back into a computer room.
Eiji: Yes?
Yuna pouted a little.
Yuna: Jeez, Eiji.
Shigemura: I see that you have taken your time in your job. But we kind of have a problem. Two people are onto us, so you need to hurry.
Eiji: I understand that, sir. I have set up the plan for the final phase. You're gonna remember your promise, right?
Shigemura: Of course. A promise is a promise.
Eiji: Thank you. Also, overtime, Yuna happens to have interests other than singing.
Yuna reads a little bit of Eiji's book.
Shigemura: That's because of her self-preservation program. That must mean the plan is going further.
Eiji: Right.
Later on at night, Sonic, Tails, Knuckles, Mighty, Ray, Amy, and Kazuto arrive at the Treasury of Meiji Shrine. They travel along the path with their Augma's on. Yuna follows them, and the touches each of their Augma's, and then they suddenly appear in a familiar place. Kirito is in his OS avatar, and their Augma's are gone. The place shows a big palace, and a flower garden.
Amy: What is this place?
Knuckles: No idea. Looks kind of familiar though.
They spot Yuna.
Kirito: Hey, Yuna? What is this place? Is this a dream or a virtual world?
Yuna: Dreams and virtual worlds are pretty much the same thing if you think about it. As soon as you wake up, everything you thought of becomes an ephemeral memory.
Sonic: Does that make all of that a dream?
Yuna: About you clearing the game, and returning back to the real world? If you open up your eyes, you still could be trapped in Aincrad.
Mighty: You could be right about that, but maybe it's not true.
Kirito: So, it's true. You were in SAO after all. You're Tetsuhiro Shigemura's daughter, right? Why did you send me and Tails to him? What exactly did you need us to do?
Tails: More importantly, why did he steal Asuna and Klein's memories, and what is the Augma really for?
Yuna starts singing a song. Kirito gets a feeling he knows what it is.
Kirito: I've heard that song before.
Yuna: My only dream is to go on and sing. That's all.
Kirito: So how can we save Asuna?
Yuna: To get her memories back, you need to keep defeating the OS bosses to reach a really high rank. Now then, you all must wake up.
She snaps her fingers, and then everyone wakes up back in the real world, in front of a security guard.
Security Guard: Woah there. You guys alright? Guess you were playing that Augma game together. I know it's popular these days, but you should be careful. Don't trip yourselves over.
Sonic: Uh, right.
Mighty: Did we just do a full-dive?
Sonic: I have a feeling I know that place we were just in, even though we were never there.
Tails: The Ruby Palace. Aincrad's 100th floor.
Meanwhile, at the karaoke palace, Asuna and Keiko both sing together. Yui waits to sing with her, and Shino, Rika, Strea, Nijika, Nanairo, Karen, Miyu, Elsa, and Sky talk to Suguha.
Suguha: I can't believe that Asuna lost her memories. If I was there, I would have protected her.
Rika: Silica's kind of feeling responsible though. Also, Klein and his friends all got injured during a battle. We heard that from Mighty and Knuckles.
Strea: It's probably best if you didn't come. Besides, you got your kendo camp to do.
Shino: Kirito so happened to tell players not to fight the SAO bosses, but yet he still continues to fight.
Karen: We actually helped him out.
Miyu: Gotta say, he's really brave.
Shino: In fact, Sonic and his friends also helped out.
Suguha: I'll teach him some kendo moves that he can use in battle, then.
Sky: You're a good sister, Suguha.
Keiko opens the door.
Keiko: Liz! It's your turn now! The concert's tomorrow, so we gotta be ready! Take this!
Keiko hands Rika a microphone and she pulls her inside the room, and they start singing with Asuna.
Suguha: I'm assuming that's their way of cheering her up.
Nijika: Looks like it.
Suguha: Asuna does look like she's enjoying herself.
Nijika: Me and Snow have both been singing duets to each other. In fact, that's what we love to do.
Suguha: That's so sweet.
Meanwhile, Kirito, Sonic, and his friends fight a bunch of SAO bosses.
Tails: There are bosses from Floor's 20 to 30 throughout the city!
Sonic: We're taking them all down tonight!
Kirito: Right!
They continue to fight all of the bosses that appear. The last one they fight is Waheela the Black Wolf. They all give it everything they got. They attack the wolf who turns into black smoke, which charges at its enemies.
Player: Those guys are doing most of the damage. Even Sonic. Awesome.
Yuna appears in a high place.
Yuna: It's time for a special stage everyone! Give it all you got!
Yuna gives everyone a buff.
Amy: Things get serious now!
Yuna watches closely at the battle, with Sonic, Tails, Knuckles, Amy, Mighty, Ray, and Kirito. The wolf then makes a spike floor, dealing damage to everyone.
Sonic: Uh oh!
Their health continues to go down, and it stops as soon as it gets to the red.
Tails: That was close.
The spike floor disappears, and the wolf charges at them one more time. Sonic and Kirito both finish it off. The boss disappears, and the map changes back to reality. Kirito's rank changes to 9, Sonic's changes to 6, Tails is 10, Knuckles is 8, Amy is 7, Mighty is 11, and Ray is 12. Eiji appears and claps his hands.
Eiji: Well done. I'm impressed. The Black Swordsman fights with some friends and learns how to fight in this game.
Sonic: Eiji?!
Kirito: You!
Kirito charges at Eiji, trying to attack with his sword, but he then he makes the Black Swordsman trip over. He notices something on his back for a moment.
Knuckles: You punk!
Eiji starts leaving quickly, and Sonic runs after him. As soon as he catches up enough, Eiji punches him hard, making him drop all his rings, and sending him flying back. When Sonic gets back up, he loses him.
Sonic: Darn it.
He runs back to the others.
Sonic: I almost got him, but man, he was strong.
Kirito: Darn!
Kirito gets a message from Eiji, saying that he'll meet him and Sonic during the concert.
Kirito: This doesn't look good.
Later on, Asuna reads her journal, and thinks about what her memories might be. While that's happening, Kazuto practices using the kendo moves Suguha sends to him on video.
Kazuto: Thank you, Suguha. These moves will help me in tomorrow's battle.