Disclaimer: I don't own Code Lyoko or any of the original characters.

Authors Note: This story was written before the second season and is based entirely off the first season.

Key: Complete Scene change

Lyoko

Earth

Code Lyoko: Additions

By. Tate Icasa

"But daddy," Whined Elisabeth 'Sissi' Delmas.

"No 'but daddies'," her father, principal of Kadic Academy said. "I've already made my decision." he sighed. "I just think it would be good for you to stay at the school this time."

Sissi opened her mouth to argue, but something caught her eye. It appeared to be a person, crossing the bridge to the old factory!

"Yes, daddy." she said.

He looked mildly surprised, but then nodded. Sissi watched him sail away. She smiled and waved until he was out of sight. Then she turned to the bridge and found a ladder up the side and began to climb.

"Whoever you are," she said to the person she'd seen. "You're so busted."

Jeremie Belpois sat in front of the super-calculator. The elevator opened to reveal Odd Della Robbia.

"Odd, thank goodness. Yumi and Ulrich need your help on Lyoko, now."

"I'm on it." he said, and pushed the elevator button. He entered the scanner and waited.

"Transfer, Odd."

The super-calculator called up his card.

"Scanner, Odd."

The super-calculator re-wrote Odd's genetic makeup into computer code.

"Virtualization."

Odd dropped to the ground in the Desert Region. He lashed his purple tail around for balance, and stay crouched, his clawed hands on the ground.

"The others are just over that ridge to your right, Odd."

Just then, Yumi Ishyama, Ulrich Stern, and Aelita ran toward Odd. An assortment of Monsters in close pursuit.

"I see 'em."

Jeremie scanned his readouts. Three megatanks, and seven blocks. Not good odds.

"Yumi, you have fifty lifepoints, Ulrich, thirty."

Ulrich nodded. "I'll keep 'em busy, you get Aelita to safety."

"Ok." Yumi agreed hesitantly.

"Come on, Princess, we gotta get you to safety." Odd said, grabbing her wrist and dragging her out of the way of a laser.

"Thanks." She gasped. He nodded as they started running.

Sissi eyed the long wires carefully. They had obviously been used to slide down before. She swallowed and slid down, stumbling a bit as she landed.

She looked down as her shoe scraped the cement floor.

"Whoever you are, you're buying me new shoes." she hissed.

Yumi pushed Aelita out of the way of the megatanks laser wall. It caught her and threw her back. She threw her fan just as her body began to fade. By the time her fan had flickered out of existence, two blocks had been obliterated.

She took the elevator up to the super-calculator room.

"How's it going?" She asked, looking over Jeremie's shoulder at the screen.

"Not good." He said grimly. "Odd got Aelita to a deactivated tower, but Ulrich's not gonna last much longer." He put the mike over his mouth. "Odd, hurry up!"

Sissi stepped into the elevator and paused. She looked at the two red buttons for a second and pressed one.

Yumi pointed to a tiny box in the corner of the screen.

"What's that?" She asked.

Jeremie clicked on it. The box enlarged. It showed the bridge leading to the factory.

"Security camera's." he mumbled.

The picture changed. He clicked the box again, and it became smaller.

"Ulrich, look out!" He yelled into the headset. Ulrich's blinking light disappeared. "Odd, it's up to you now."

Sissi looked around the room. Three golden cylinders stood with her.

Just then, one of the cylinders opened, and Ulrich half-fell out.

"Ulrich!" She exclaimed.

"Sissi!" He cried, obviously surprised.

"What are you doing here?" They asked at the same time.

"Oh, uh. . ." He whipped out him mobile and dialed, turning around. "Stay right there." He said to her. "Jeremie? We have a problem. . .Sissi's down here in the Scanner room with me. . .Yeah, ok, we'll be right up." he put the mobile into his pocket and turned back. "Alright, come on." he told her, pulling her into the elevator and pressing the number code.

"Yumi." Jeremie said urgently. "Sissi found her way into the factory. Ulrich's brining her up here."

"Sissi? -Oh- what was she doing here?"

"That's what I hope to find out."

The elevator opened.

Jeremie swivled his chair around the Holo-Map. Yumi walk around to stand next to Ulrich. All faced Sissi.

"Ulrich, dear, I demand an explanation!"

"First, I am not your 'Ulrich, Dear.' And second, I don't have to explain anything to you."

Yumi tipped her head, and the three of them crossed the room.

"Can we trust her?" Jeremie asked.

"I wouldn't." Ulrich said.

"Under the circumstances," Yumi responded, glancing at the display, where Odd's lifepoints seemed to decrease as if on cue, "I don't think we have a choice."

"You wanna send Sissi to Lyoko?" Ulrich said in disbelief.

"Mm-hmm." Yumi answered.

Ulrich opened his mouth to protest, but Jeremie cut in. "Look, guy's, we don't have time for this." He sighed, "Much as I hate to say it, Yumi's right, we don't have a choice."

Ulrich hesitated a minute before nodding.

"Alright then. You two explain to Sissi and get her in one of the Scanners. I'm gonna check up on Odd."

Yumi gave a thumb's up, and she and Ulrich, went over to Sissi. As they led her to the elevator, Jeremie got back into the chair and swivled back to the super-calculator.

"Hey, Odd."

"Oh, you're back." Odd said, backflipping behind a rock. "I hope you've got a plan."

"As a matter of fact, yes. But you're not gonna like it." he warned.

"Look, einstein, if it's a plan, I'll go with it. I can't beat them all, and I'm not a pretty kitty anymore."

"Odd! This isn't a joke! Sissi's here!"

"No joke, Jeremie." Then. "Did you say Sissi? At the factory?"

"Yes, Odd, she followed you. We're going to send her to Lyoko."

"Are you sure that's a good idea?"

"Do you have a better one?"

"No. By the way, how many lifepoints do I have left?"

"Twenty. Be careful."

Jeremie dialed Ulrich's mobile. "Is she ready? . . . Ok, I'm starting the virtualization." he hung up.

"Transfer, Sissi."

The super-calculator scanned sissy, adding an info card to it's data banks.

"Scanner, Sissi."

The super-calculator whirred, creating a virtual body for Sissi.

"Virtualization."

Sissi appeared on Lyoko. Her long black hair was held back in twin ponytails. She wore a dress similar to Aelita's, but in hot pink and yellow, with different sleeves. Around her neck was a chain.

"Hey, Sissi, you ok?" Jeremie asked.

Sissi looked around. "Yeah. So, this is where you four are always sneaking off to."

"Yep. Ok, somewhere to your right is an outcropping of rocks. Odd is waiting for you."

Sissi ran until she found Odd, and nearly screamed. Odd put a hand over her mouth.

"Those are Monsters. You have to hit the eye to destroy them." He ducked, and pulled her down with him. As a laser streaked over head. "Oh, and don't get hit. If you lose too many lifepoints, you end up back on Earth. But if you don't get Aelita to the tower it's game over Earth, got it?"

"Ok. . .what do I hit them with?"

"Take off your chain." Jeremie suggested.

She shrugged and yanked the chain off. It changed in her hand to a whip, glowing yellow.

"That should work as a whip and a rope." Jeremie said.

"Let's go." Odd said, leaping over the rock. "Laser Arrows!" Two of the arrows deleted a couple of lasers. The third destroyed a block. He landed on the frame of an opening megatank and fired. Nothing. "Uh-oh. Jeremie, I'm out of Arrows!"

"Ok, hold on and I'll reload you."

The eye began to glow. "No, don't bother." The laser-wall knocked him back. Sissi watched him fade and disappear. "Good luck."

Sissi jumped out. The remaining two blocks scuttled towards her, she spun her whip across them. The two megatanks turned to face her. One shot a laser-wall at her.

"Hey! That's not very nice!" She yelled, clenching one fist. "What the. . .?" Spikes came out of her knuckles. She punched the megatanks eye.

"Sissi, jump, before it explodes!" Jeremie told her.

She began to jump away, but the explosion knocked her back into a tree.

"You just lost twenty lifepoints." Jeremie informed.

The second megatank rolled forward. She waved her whip at it. It began to open. The bean shot out and she leapt away, doing a handspring.

"I'll teach you!" She sniffed. She leapt forward, punching. Suddenly, the spikes left her knuckles, flying into the eye. "Now what?" She called upward, as the megatank disappeared.

"Get Aelita to the tower." Jeremie said.

Aelita stepped out of the deactivated tower and joined Sissi.

"Lead the way." Sissi said.

The tower glowed red.

"How are you gonna get inside that?" Sissi asked.

"It's not solid." Aelita said. "Get ready."

"Wait. So. . .you're gonna go in there, and put in some kind of code. . .and time is gonna reset?"

"Well, yeah."

"Sissi, after the return trip, come to my dorm." Jeremie said. "We'll be waiting for you."

"Ok."

Aelita entered the tower. She rode through the data stream to the next level. The interface slid down and scanned her computer code. Her name flashed across the screen. She input the code.

The screens fell toward the bottom of the tower, and the white time bubble rose.

"Return to the past now." Jeremie said.

"Goodbye, daddy." Sissi said. She kissed her fathers cheek.

After he had gone, she headed back to the school. Nicholas and Herb joined her.

"Nicholas, Herb. . ." She began.

They looked at her expectantly.

"Sissi's gang is no more." She said firmly. "I'm going Ulrich's group."

"I don't believe it." Herb said.

"Well fine then, see for yourself." She held her nose up and turned on her heels, walking toward Jeremie's dorm. Herb and Nicholas followed.

When they arrived, Sissi knocked on the door.

Ulrich opened it and peered out.

"Oh, hey Sissi. We've been waiting for you." He said, letting her in and slamming the door in Herb and Nicholas's faces.

Sissi looked at them. "So it wasn't a dream."

"Nope." Jeremie said.

Ulrich held out his hand and she shook it.

Preview:

"Jeremie! Wait! There's something wrong with the" he was cut off as the time bubble engulfed them.

"What? Where are they?" Jeremie asked.

"Nice to meet you Steve. I'm Odd. That's Sissi and Aelita. Um, we're not from around here."

"I could send you, Jeremie. I know you hate the scanners, but if it's the only way. . ."