We open a few days after the battle of Violight, where Jeremie was once again running the materialization program for Aelita in the middle of the night. But as he entered it, the program failed and a red exclamation point was shown.
"What do you mean? I don't believe this. Why does it always happen just then? Aelita? Did you deactivate those sinusoidal modules like I told you to?" Jeremie asked.
"Of course. And I even fragmented the internal engines." Aelita said.
"I already did that. The system is bound to screw up if it gets the same data twice. If we keep working against each other, we're never going to succeed." Jeremie said.
"I'm sorry." Aelita said.
"No! I mean I'm sorry. I shouldn't have gotten so angry." Jeremie said.
"No. It was my fault, Jeremie. Either way, I think we should stop for tonight. Good night." Aelita said.
"Wait, Aelita!" Jeremie called out before Aelita logged off for the night.
The next day…
"Morning, guys." David said.
Jeremie just looked down as they converged.
"Geez… Looks like I'm not the only one that would've rather slept in. What happened?" David asked.
"Me? I didn't sleep a wink. I've got an awful lot on my mind." Jeremie said.
"Materializing Aelita, right?" Elize asked.
"No. Well, yes actually. But it's a lot more than that." Jeremie said as the bell rang. It was later in the classroom where the conversation continued.
"So what's up?" Pit asked.
"Well last night, me and Aelita sort of had a fight." Jeremie said.
"About what?" Mahiru asked.
"Nothing. It was on account of me. I yelled at her and I think she got mad. I need to go." Jeremie said.
"Where, the boys room?" Hiyoko asked.
"No. To Lyoko." Jeremie said.
"What?" Hiyoko said.
"Miss Saionji! Repeat to me what I just told you." the teacher said.
"Uh…." Hiyoko stammered. "Odd, a little help here?" but Odd was fast asleep as everybody laughed.
Later after class….
"I'm not sure its a good idea for you to do this, Jeremie. I mean, virtualizing yourself to head to Lyoko to apologize to Alileta? That's not something we can have you risk doing." Hope said.
"Don't worry. It won't be long, about an hour. I can go at lunchtime." Jeremie said.
"That's not the problem. I mean, Miu knows about a little of the computer, but you practically mastered the thing." Kaminari said.
"True, but once you get the idea, it's not that complicated.I can launch a simple biactor program and give you the directions." Jeremie said.
"Something about this just doesn't seem right. What if XANA attacks while you're there?" Kaede asked.
"Then we bring him back and have someone else take his place." Kokichi said.
Later at the factory, Jeremie explained to Yumi how to use the supercomputer and how to set it to transfer his memory instead of his body. He handed Yumi the manual for the computer and headed down to the scanners.
"Your scanner, sir." Pit said, showing him inside.
"Be brave, Jeremie." Jeremie told himself as he stepped inside as it closed.
"I'm starting the transfer now." Yumi said.
As the scan commenced, an error appeared on the screen. When the scanners opened again, Jeremie was gone. The group quickly converged in the lab.
"What the heck happened? Where's Jeremie?" Mineta asked.
"During the transfer, Yumi made a data transfer error. He didn't end up in Lyoko or with you. He's stuck in between." Aelita said.
Jeremie floated within a white space as he muttered something. "Get memory. Get memory." Jeremie said.
"We can still bring him back, right? Aelita, are you still able to connect to him?" Mahiru asked.
"Yes. I can think what he thinks. I need to recover memory in the four passage towers and transfer them into the three scanners to bring him back. It will take one of your afternoons." Aelita said.
"No time for us to dillydally, then." Jesse said.
"You guys head back to school. I'll stay and monitor Aelita's progress." Yumi said.
As for Jeremie, he floated in that space before finding himself in a large blue room with cells all across the walls. "What the…"
"Well...seems this is the second time we've had to meet like this." a voice said as a man with a long nose sat behind a desk.
"Second time?" Jeremie asked.
"Oh, that's right. This is a different timeline so to you, this would be the first time, wouldn't it?" he said.
"What are you talking about, you're not making any…" Jeremie started.
"It's okay." said a young girl in a blue dress with a blue headband.
"Just...what is this place?" Jeremie asked.
"Ah yes. I welcome you...to the Velvet Room. My name is Igor. You could consider me a warden here." he said. "This young girl is Lavenza...she is my attendant."
"Why did you bring me here?" Jeremie asked.
"I'll be honest...right now in the present...or rather an alternative future to you...a large catastrophe is currently unfolding with no end in sight it would seem." Igor said. "And those who can stop it are preoccupied with dealing with the Redux's rules. As much as I would like to break them out, I'm afraid the rules can't be broken by me. Were I to remove them prematurely...that could cause drastic changes to this current timeline."
"So...what are we supposed to do about it?" Jeremie asked.
"In the near future...Lavenza will reappear within your world...more than likely, the day you bring that girl into reality. She will bring you all here and then we can work on setting things right." Igor said. "Now...I think it's time you were off." he said as Jeremie vanished.
"What about the pink haired girl?" Lavenza asked.
"No worries. I've blocked the experience here from his mind. He'll remember when he meets with you in the future. Now all they have to do is continue going down the repeated path until they reach the finish line." Igor said.
Later we see Aelita approaching the second tower in the desert. She entered it and obtained the second set of memory codes. The group then arrived at the lab.
"She just got the second set of memory codes and is heading to the forest as we speak." Yumi said.
"Why don't you head back to school? We'll take care of things here." David said.
Yumi then left for the school while the rest of the group monitored Aelita. As Aelita headed for the third tower, a group of Kankerlats began to follow Aelita and tried to hit her with their lasers, but they missed her every time and she had reached the third tower.
"Phew… That was close." David said.
Later we see Aelita approaching the mountain sector tower only to see two bloks in front of it.
"I can't get near the tower. XANA's already aware of what's going on. And I'm losing more and more of Jeremie by the minute." Aelita said.
"Okay, okay. Calm down. I'm sure that there's a way out of this problem." David said.
"Jeremie says that we can't get it from another scanner and an external computer can't produce enough power to operate the three scanners." Aelita said.
"Hmm...what about one?" Jexi asked.
"I'll check with him." Aelita said.
"But why one? We need all three, don't we?" Magnamon asked.
"Jexi is on to something here. If someone here gets sent to Lyoko, they can help Aelita reach the tower and bring Jeremie back." Leopardmon said.
"You have to hurry. The computer's beginning to delete him. It's confusing him with an outdated file." Aelita said.
"We're running out of options. I'll call Yumi and ask her to bring Jeremie's laptop." Sachiko said.
Meanwhile on Lyoko, the bloks had spotted Aelita and began to chase after her. As she ran from the bloks, she jumped across a gap and landed safely. One of the bloks then fell off the ledge and into the sea. Meanwhile on Earth, Ulrich has received a call that Yumi was in the principal's office. He then hurried to the school to get her out of trouble. It didn't take long before the two ran back to the factory.
"I am not going to ask." David said.
"Trust me. It's better for all of us if you don't." Ulrich said.
"So you don't wanna share how you kissed Sissi?" Dan asked.
"If any of you tell Yumi, you're dead." Ulrich said as he headed down to the scanners.
"Aelita, are you there? Ulrich is going to try and reach you." David said.
"Yes. I'm here." Aelita said.
Yumi then started connecting the laptop. "We don't have enough memory. We need ten more bytes." Yumi said.
"Anyone got any ideas?" David asked.
"Maybe I do." Odd said.
"Alright Odd, what do you have in mind?" Mark asked.
The process was then launched again and this time Ulrich was virtualized. As Aelita was being sandwiched by the blok from before and a new blok, Ulrich stabbed the new one and threw his sword at the original, which destroyed both.
"Say, where did you get the rest of that memory?" Ulrich asked.
"Thank Tetris Annihilator. I hope you weren't planning on playing anytime soon." Odd said.
"I have more important things to worry about than games." Ulrich said.
Aelita then ran to the tower to retrieve the last of the memory. We then see the in between where Jeremie awoke to see Aelita reaching out for him. As soon as they touched, Jeremie was in the scanner back on Earth, where everyone welcomed him back with open arms. They soon return to Jeremie's room where he awoke. That night, he and Aelita made up for their fight while Ulrich and Yumi were goin through some difficulty of their own on account of the kiss with Sissi.
"I tell you, that was pretty crazy. To be honest, I was kind of scared we'd lose him for a moment there." David said, communicating with the others on the Sunny.
"Yeah. Same here. We're glad it all worked out." Jexi said.
"I've been wondering… Do couples really fight a lot?" Dracozolt asked.
"Well, not all the time, but… It does tend to happen." David said.
"Someone should tell that to that Stern boy and Ishiyama girl." Arctozolt said.
"I...don't think that's a good idea." Cheetah said.
"I'll have to agree with her on this. It's probably better for all of us if we stayed out of that one." David said.
"Yeah, those two are kinda on again off again a lot of the time. Least during the time facing XANA." Nami said.
Outside the school, Ulrich tries to talk to Yumi.
"Listen, Yumi. It's not what you think. There's nothing going on between me and Sissi." Ulrich said.
"Sure, good night!" Yumi said hanging up.
"Yumi wait, lemme explain… Yumi, are you still there? ...Yumi?" Ulrich called.
Meanwhile in the Velvet Room….
"Will we see that boy again?" Lavenza asked.
"We most certainly will, along with the rest of them. I look forward to seeing the materialization again. They'll need all the help they can get if they are going to fight the elves." Igor said. "As well as uncover the truth behind their demise."