EPISODE GUIDE

Episode list and summaries

Saison 1 :
Saison 2 :


1st Saison
Episodes 1 to 26


1. TEDDYGOZILLA

First aired: 4/19/2004
Writer: Frédéric Lenoir

A student named Milly seeks the comfort of her teddy bear after being embarrassed and ostracized due to her young age by Sissi, the school's bully/diva. Milly believes that her teddy is the only one that she can turn to for comfort and support. A corrupted super computer known as X.A.N.A. enters the real world by possessing the bear. In a quest to strike and destroy his enemies, the X.A.N.A infected teddy bear increases to an enormous size. No one is safe as this monstrosity creates a path of destruction...

2. SEEING IS BELIVING

First aired: 4/20/2004
Writer: Francoise Charpiat

When XANA's attack on the nuclear plant endangers the city, the gang must decide whether or not to reveal the secrets of Lyoko to the public and sacrifice Aelita forever...

3. HOLIDAY IN THE FOG

First aired: 4/21/2004
Writer: Laurent Turner

To keep an eye out for X.A.N.A., Jeremie decides to stay back at school for the vacation. Suspicious of the gang's secrets, Sissi decides to stay as well, milking the situation when X.A.N.A. launches toxic gases into the school, in an attempt to destroy his enemy...

4. LOG BOOK

First aired: 4/22/2004
Writer: Francoise Charpiat

Sissi has found something very special and dear to Ulrich, his diary! Unfortunately the diary contains some information on X.A.N.A. and Lyoko. Sissi decides to use this as a means of blackmail to get with Ulrich. Later Odd, Ulrich, Sissi, and some of the other students are going to a pool, the bus that their riding in is X.A.N.A.'s next target. He wants to ram the bus into a chemical plant. Now the team must head to Lyoko to help Aelita get to the tower to save the students and the rest of the city…

5. BIG BUG

First aired: 4/23/2004
Writer: Alain Serluppus


The day starts off when two girls are talking about Ulrich and then Sissi goes and interrupts and tells the girls that Ulrich is hiding his affections for her. Later, Odd, and Ulrich pull a prank on Sissi, giving her a txt message about a "true love". While the prank is being set, people in the town are experiencing difficulties due to a strange virus, now 2 trains are going on a collision course and one of the trains has highly toxic chemicals which can kill the town's population. Yumi cannot contact Ulrich and Odd because they shut off their mobiles. The prank is being set and Sissi opens a shed which happens to be Kiwi (Odd's dog)in there and jump on Sissy. Then Odd gets in trouble after bringing Kiwi on the campus. Yumi finds the 2 and try to go to the factory, but Odd is stopped by Jim and is carried over to the principal. Now to help Aelita fix Xana, they will need everyone in the group, where is Odd when you need him?…

6. CRUEL DILEMNA

First aired: 4/26/2004
Writer: Alain Serluppus

Jeremie is working on the materialization program, and accidentally Odd finds it, but it can be used only one time. Jeremie wants to matierialize Aelita, but realizes that preparations need to be made. That night, X.A.N.A. possesses two bulldozers and starts to destroy the factory. Odd and Yumi go into Lyoko where she falls into a virtual black hole. In order to save Yumi's life, Jeremie has to choose between either materializing her or Aelita…

7. IMAGE PROBLEM

First aired: 4/26/2004
Writer: Bruno Regeste and Ghislaine Pujol

When a return trip from Lyoko has, apparently, weared Yumi out, the gang suspects nothing, until strange behavior from their tomboyish friend has them convinced that either XANA is up or Yumi has gone mad…

8. AND OF TAKE

First aired: 4/28/2004
Writer: Laurent Turner

When a director comes to town to film a movie, XANA posseses a plastic alien model in order to destroy Ulrich and the others...

9. SATELLITE

First aired: 4/29/2004
Writer: Françoise Charpiat

When all the student's cell phone goes off in class, it starts Sissy on a petition to save her cell phone--but it's goes awry when Odd breaks into the school's office's locker to get his, Ulrich, & Yumi's cell phone. It turns out that X.A.N.A. is trying to get out board a highly powerful miltiary satellite in space. X.A.N.A.'s target turns out be our heroes.

10. THE GIRL OF DREAMS

First aired: 4/30/2004
Writer: Laurent Turner

Around the same time that Jeremie loses contact with Aelita, a new student named Taelia resembling her arrives to Kadic. Believing that Taelia is Aelita with amnesia, Jeremie reveals the existence of Lyoko to her. Meanwhile, X.A.N.A. possesses samurai armor that Yumi had brought to school for a presentation…

11. PLAGUED

First aired: 5/3/2004
Writer: Jean Rémi François, Bruno Merle

When the gang learns that if Jeremy passes a few tricky quizzes, that he'll get transfered to another school, they quickly seek a way for him to stay, even if it means failing the test on purpose. Meanwhile, XANA gains possession of a pack of rats, using them to attack the flow of power in the city as well as his earthbound enemies…

12. SWARMING ATTACK

First aired: 5/4/2004
Writer: Vincent Bonjour

Ulrich is fussing over a mysterious letter found slipped under his door one night... a love letter signed by Yumi! Meanwhile, XANA infects a hive of bees and is using it to attack our heroes. Ulrich struggles with his feelings and how to tell Yumi how he feels about her; that is, if he can figure it out himself, and saving the day from XANA in an episode of life and death…

13. JUST IN TIME

First aired: 5/5/2004
Writer: Bruno Regeste


The episode starts with Jeremie still trying to materalize Aelita. He calls the team to the factory to show them his latest development: a strand of her hair that he has materalized into a test tube. Unfortunately, he didn't realize that he pressed one button too many, and thus screwed up Aelita's programming by adding in a whole lot of bugs. The result is that, immediately after she successfully enters the "code Lyoko" into a tower, she will be formatted - as in, deleted. And of course, as Jeremie is trying to literally work out the bugs, Xana attacks by putting out shockwaves to shake things up, putting Odd, the two junior journalists, and Kiwi in danger. But is Jeremie willing to allow Aelita to be deleted in order to save his friends ? …

14. THE TRAP

First aired: 5/6/2004
Writer: Philippe Grimond

On the anniversary of their first meeting with Aelita, the gang attempts to find a way to surprise her. Meanwhile, X.A.N.A. sets a trap for the defenders by taking control of the machinery in the factory...

15. LAUGHING FIT

First aired: 5/7/2004
Writer: Laurent Turner

After Yumi's parents get into a fight, Ulrich decides to use the school play as a way to reunite them. Meanwhile, X.A.N.A. attempts to strike at the warriors by possessing canisters of laughing gas…

16. CLAUSTROPHOBIA

First aired: 5/10/2004
Writer: Francoise Charpiat

X.A.N.A. short-circuits the Kadic cafeteria in order to trap Odd, Ulrich, and bunch of students in an electrified prison. Jeremie, Yumi, and Aelita race to deactivate the tower before it is too late. Meanwhile, Herb becomes jealous of a new student named Theo who is via for Sissi's affection...

17. AMNESIA

First aired: 5/11/2004
Writer: Alain Serluppus

In class learning about nanodoctors, Ulrich is suddenly stricken with a case of amnesia that quickly spreads through the school. When the gang learns that X.A.N.A. is the cause, they rush to Lyoko to prevent this from escalating. Meanwhile, Sissi attempts to persuade Ulrich that the gang is his enemy in an effort to make him hers...

18. KILLER MUSIC

First aired: 5/12/2004
Writer: Sophie Dubreuil

A new song Odd downloads sends him into a coma, and the same song is passed through the school. XANA's new beat is the cause, and he can broadcast it anywhere. The hospital is full to bursting with cases, and Odd's heart gets weaker with every beat it makes. But when the tune starts playing in the factory, will the crew learn that music can do more than just soothe the soul? And, will Aelita be able to save the crew? It's all up to a leap of faith…

19. FRONTIER

First aired: 5/13/2004
Writer: Bruno Regeste

Jeremie is now taking his "Materalize Aelita!" campaign to levels unknown - quite literally. Unfortunatly that leads to him having a fight with Aelita giving him some guilt. He virtualizes himself to apologize, but there isn't enough memory in the system to complete the transfer, and Jeremie is caught between worlds. It will take more memory than the factory has to complete the transfer back to Earth, and if the crew doesn't hurry, Jeremie will be deleted as an old file! Could this be the final frontier for Jeremie? Will Yumi be able to pick up the slack?…

20. THE ROBOTS

First aired: 5/14/2004
Writer: Carlo de Boutiny, Frédéric Lenoir

Both Herb & Jeremy are in a robot competition Herb with "Iron Sissy", and Jeremy with "Kiwi 2." Herb cheats by launching a gear from Sissy to destroy "Kiwi 2." Meanwhile, Xana's latest plan, using the factory to built a robot. Ulrich & Yumi get help from Herb in slow down Xana's robot. Jeremy discover that Xana robot had built in the factory and messed with computer that goes to Lyoko. Jeremy fixes the super computer, and Odd helps out Alieta in Lyoko. After the time reboot, Kiwi 2 dodges Herb's gear to win the contest...

21. ZERO GRAVITY ZONE

First aired: 5/17/2004
Writer: Carlo de Boutiny, Frédéric Lenoir

Manipulating the power of gravity, X.A.N.A. prepares to cast his enemies into an airborne grave. Meanwhile, Ulrich is torn between his loyalties to the gang in their fight against X.A.N.A. and to his soccer sport, cannot decide what to do...

22. ROUTINE

First aired: 5/18/2004
Writer: Bruno Regeste

Tired of the same old routine of fighting X.A.N.A., Ulrich decides it's time for a change, which leads to strife between him and Yumi. Meanwhile, X.A.N.A. infects himself with a virus in order to disrupt the scanner program. This will lead the warriors to their death if they can't stop him…

23. ROCK BOTTOM ?

First aired: 5/19/2004
Writer: Jean Rémi François, Bruno Merle

Well, it starts off as Yumi wanting to have a party at her house. Of course, Odd jumps into action, and says that he has the DJ (Disk-Jockey) problem all solved, they weren't going to listen to Sissy's music. But, oddly, Jeremy couldn't get a connection with Lyoko. Later, Odd and Ulrich are having sliding contests across the floor, but soon, a picture of the DJ Odd was getting fell on the floor. Ulrich and Jeremy saw is and they asked who it was. Odd said it wasn't important, and he had some stuff to do. Later, again, Odd saw Samantha, the DJ he was getting, and obviously, he happened to know her. They got into the Computer Lab, and Sam wanted to take the most powerful laptop there. Jim went in and saw Odd holding the laptop. He scolded Odd, and he ended up getting out. But, they saw Xana attacking and they went to go and rescue Samantha, as she was still in the lab. Yumi and Jeremy went to the factory. Ulrich and Odd saved Samantha, but when Yumi got to Lyoko, she was materialized as soon as that. Odd and Ulrich got to the factory, and were materialized. They both destroyed the Hornets, but were both materialized. Aelita entered the tower, and stopped the mud/dirt level from drowning Jim and the city…

24. GHOST CHANNEL

First aired: 5/20/2004
Writer: Frédéric Lenoir


When Jeremie and Aelita discover that the rest of the gang is trapped inside one of X.A.N.A.'s virtual prisons, Jeremie must gather his courage and step foot on Lyoko a second time in order to save them…

25. CODE EARTH

First aired: 5/21/2004
Writer: Sophie Decroisette

As Jeremy is perfecting his materialization program for Aelita, Yumi, Ulrich and Odd are making preparations for her arrival. But as success comes within their grasps, Jim's paranoia aggrivates the already bad situation started by XANA. Due to his injured ankle Jeremy has no choice but to reveal the existance of Lyoko to Jim so he can get to the warehouse. In the end XANA's attack is stopped and Aelita has finally been materialized into the real world. Or has she?…

26. FALSE START

First aired: 5/24/2004
Writer: Alain Serluppus

When Jeremie discovers a fatal connection between a materialized Aelita and the supercomputer, the gang realizes that they will have to postpone their attempts of ridding the world from X.A.N.A. Meanwhile, the corrupted supercomputer decides to engage the warriors in the real world by materializing his monsters for the first time...


2nd Saison
Episodes 27 to 52


27. NEW ORDER

First aired: 9/19/2005
Writer: Bruno Regeste, Sophie Decroisette

While on her first science field trip with the rest of the gang, Aelita begins to experience mysterious visions that draw her to an abandoned house called the Hermitage. In nervous preparation to reveal to Yumi how he feels about her, Ulrich becomes a little jealous when he sees her hanging around a new student named William…

28. UNCHARTERED TERRITORY

First aired: 9/20/2005
Writer: Bruno Regeste, Sophie Decroisette

Haunted by a recurring nightmare and having a difficult time adjusting to her new life in the real world, Aelita decides to return to Lyoko. Meanwhile, Jeremie does some background research on the hermitage, and discovers a connection between it and Kadic. As the gang continues to search for answers to their many questions, a new mystery appears out of nowhere.

29. EXPLORATION

First aired: 9/21/2005
Writer: Françoise Charpiat

Odd, Aelita, and Ulrich set out on a dangerous exploration mission to the fifth region in order to search for information about X.A.N.A. Yumi is forced to stay behind after her parents reprimand her for continuously coming home late…

30. A GREAT DAY

First aired: 9/22/2005
Writer: Laurent Turner

The gang is forced to continuously relive a day after X.A.N.A. is able to take control of the time traveling mechanism. Meanwhile, Sissi attempts to blackmail Jeremie with a recording that she made of him conversing with Aelita about her true identity.

31. MISTER PUCK

First aired: 9/23/2005
Writer: Bruno Merle, Jean Rémi François, Sophie Decroisette

Aelita having another bad dream featuring the strange elf. Aelita wakes screaming and she is experiencing images of her recurring nightmare while she’s still awake, which leads to further investigation of the hermitage. As they continue to uncover more clues to this growing mystery in lyoko, a deadlier X.A.N.A. infiltrates the group in order to get to Aelita once again…

32. SAINT VALENTINE DAY'S

First aired: 9/26/2005
Writer: Laurent Turner

In Aelita's room, she is having yet another bad dream. The man in red leaves a present outside her door. This gift from this stranger on Valentine’s Day makes Aelita happy and Jeremie jealous.Meanwhile, Jim has caught the strange man. It turns out that he's been possessed by XANA. At the same time, gifts from Sissi and William place Ulrich and Yumi in a similar and awkward position. Things are not what they appear to be...

33. FINAL MIX

First aired: 9/27/2005
Writer: Françoise Charpiat

After repairing William’s turntables and showing some mixing skills, Aelita is invited to DJ at Kadic’s techno dance party. Spending her time in preparation for this event results in an argument between Aelita and Jeremie over what is important in life. Meanwhile, X.A.N.A. uses the school dance to stealthily go after Aelita…

34. MISSING LINK

First aired: 9/28/2005
Writer: Karine Lollichon

In preparation for another trip to Carthage, Yumi is attacked by the Scipizoa and drained of a vital component needed for materialization into the real world. Now Yumi is stranded in Lyoko as the gang races against time to find a way to bring her back before X.A.N.A.’s next attack. Despite Jeremie’s objections, Aelilta decides to sacrifice herself in order to save Yumi. Meanwhile, to prevent Yumi from getting in trouble with her parents and the Kadic administration, Sissi agrees to pose as her for the school picture...

35. THE CHIPS ARE DOWN

First aired: 9/29/2005
Writer: Sophie Decroisette, Laurent Turner

Yumi reveals to her friends that there is a possibility that she might have to go back to Japan as a result of her father losing his job. The thought of Yumi no longer being around proves to be too much for Ulrich. He decides to risk making X.A.N.A. stronger and his friendship with the rest of the group to prevent this from happening.

36. MARABOUNTA

First aired: 9/30/2005
Writer: Bruno Regeste, Sophie Decroisette

Using the concept of marabounta and some of Franz Hopper’s research, Jeremie creates a program to search and destroy X.A.N.A.’s monsters. It appears to be a success until it targets Aelita and all of Lyoko for elimination. Meanwhile, Ulrich embarrasses himself while trying to upstage William for Yumi’s attention...

37. INTERET COMMUN

First aired: 10/3/2005
Writer: Karine Lollichon, Sophie Decroisette

X.A.N.A. has possessed a dangerous criminal and helped him escape police custody. Meanwhile, the super computer is losing power and will cost Aelita her life if the gang can't do something about it.

38. ATTACK OF THE ZOMBIES

First aired: 10/4/2005
Writer: Bruno Regeste

A bite from a X.A.N.A. possessed Kiwi turns Tamiya into a zombie, which leads to a school wide epidemic of zombified Kadic staff and students. Odd, Aelita, and Jeremie attempt to get to the factory, but William refuses to let them out of the cafeteria...

39. ULTIMATUM

First aired: 10/5/2005
Writer: Sophie Decroisette, Alain Serluppus

Possessed by X.A.N.A., Mr. Delmas abducts Odd and Yumi. The rest of the gang is then given an ultimatum by the super computer. Deliver Aelita to the scipizoa, or he will liquidate his hostages…

40.A FINE MESS

First aired: 10/6/2005
Writer: Bruno Regeste

A problem in the re-materialization process results in Yumi and Odd switching bodies. Believing that having to experience each other’s lives is nerve wracking, the two soon discover that they have bigger problems to contend with...

41. XANA'S KISS

First aired: 10/7/2005
Writer: Frédéric Lenoir, Alain Serluppus

Feelings are hurt and relationships are tested as X.A.N.A. twists normal perception and reality in order to weaken the strong friendship of his enemies...

42. VERTIGO

First aired: 10/24/2005
Writer: Francoise Charpiat

A fear of heights, a bugged antivirus, and a pack of wolves add up to trouble for the Lyoko gang when X.A.N.A. attacks…

43. COLD WAR

First aired: 10/25/2005
Writer: Bruno Merle, Jean Rémi François

An inconsistency in the activation of towers catches the gang off guard when X.A.N.A. alters the city’s climate for the worse...

44. A BAD TURN

First aired: 10/26/2005
Writer: Bruno Regeste, Sebastien Viaud

Materializing krabes into the real world, X.A.N.A. wages a war on all fronts against his enemies. Meanwhile, Ulrich mistakenly believes that Yumi has hooked up with William...

45. DEJA VU

First aired: 10/27/2005
Writer: Bruno Regeste

Aelita places herself in harms way as she sets out on her own to investigate the source of her visions as they increase in intensity, and seem to reveal something new and strangely disturbing. Meanwhile, Odd meets a girl on the internet who he is really into...

46. TIP-TOP SHAPE

First aired: 10/28/2005
Writer: Laurent Turner

When X.A.N.A. takes possession of the school nurse, Jeremie reveals that he has figured out a way to even the real world battlefield.

47. FRANZ HOPPER

First aired: 10/31/2005
Writer: Frédéric Lenoir, Alain Serluppus

With the arrival of the mysterious Franz Hopper, everything that the gang thought they knew about Lyoko is thrown out the window. Meanwhile, negative consequences resulting from Jeremie’s past decisions are brought to light as his role in the group is questioned…

48. IS ANYBODY OUT THERE

First aired: 11/1/2005
Writer: Jean Rémi François, Bruno Merle

By corrupting the super scan, X.A.N.A. is able to enter the real world undetected and wage a surprise attack. Without the ability to locate and detect an activated tower, the gang race to find it before time runs out...

49. TEMPTATION

First aired: 11/25/2005
Writer: Sophie Decroisette, Laurent Turner

When an overworked and erratic Jeremie refuses to take a break from his research, the gang fears that their friend is on the verge of a mental breakdown…

50. CONTACT

First aired: 11/25/2005
Writer: Bruno Merle, Sophie Decroisette, Jean Rémi François

A mysterious force takes over Sissi’s mind and attempts to use her as a communication conduit between Lyoko and the real world. Seeing this as a grave threat, X.A.N.A. seeks to sever the connection...

51. REVELATION

First aired: 12/9/2005
Writer: Sophie Decroisette, Bruno Regeste

After the retrieval of vital information from the fifth sector, the gang returns to Lyoko so that Aelita and Jeremie can decode Franz Hopper's diary. X.A.N.A. sees this as a perfect opportunity to deceive the group and sabotage the mission…

52. THE KEY

First aired: 12/9/2005
Writer: Sophie Decroisette, Bruno Regeste

With the end of the year school dance approaching, the gang sets out on a final mission to retrieve a vital component needed to cure Aelita. Tormented by the startling revelations concerning Franz Hopper and the origins of Lyoko, a troubled Aelita takes drastic action to finally rid the world of X.A.N.A…

 

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