Code Lyoko

Name: Code Lyoko
Genre: Action, Adventure, Animation, Children, Comedy
Rating: 8.4

8.4/10 Community Score

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Genres: Action Adventure Animation Children Comedy Family Fantasy Romance Sci-Fi

First Aired: 2003-09-03Length: 23 MinStatus: Ended

Code Lyoko tells the story of a group of students who uncover a parallel universe called Lyoko inside a super-computer, which entraps a malevolent sentient AI called X.A.N.A. (Source: thetvdb.com)

Episodes

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Season 4 (show/hide)
30	Echoes	2007-11-10
After finally defeating XANA, our heroes gather again to shut down the super computer, but find it hard to put an end to their lives of adventure. They may not have a choice though, when Sissi reveals their secret to the school headmaster.
29	Fight to the Finish	2007-11-10
In the ultimate battle against XANA, our heroes work with Franz Hopper to destroy the evil super computer forever. But first they must face everything XANA can throw at them.
28	Down to Earth	2007-11-03
Our heroes return to Siberia to free William from XANA's clutches, but first they must defeat the Kolossus and an army of robots. They better hurry too, because William's parents are visiting and his clone won't fool them for long.
27	Cold Sweat	2007-11-03
Odd and Yumi travel to polar Siberia on a mission, only to be confronted by William who has been sent by XANA to stop them. Meanwhile, Ulrich and Aelita confront XANA's latest creature, the massive Kolossus.
26	Bad Connection	2007-11-03
XANA uses the school's cell phone antenna to spread a virus causing phone users to become evil zombies, including Odd's parents, who are visiting. Our heroes travel through Lyoko to the mountains to stop the virus and reverse its effects.
25	Wrong Exposure	2007-10-27
Aelita's secret past is in danger of being revealed when Sissi gets a hold of an old photo of Aelita with Franz Hopper. Meanwhile, Jeremy needs the picture because of the mathematical formulas written on the blackboard in the background.
24	Music to Soothe the Savage Beast	2007-10-20
XANA kidnaps Aelita just before her big night deejaying at the Subdigitals' concert. While her friends battle to save her in the virtual world, Odd is busy looking for an extra ticket that he promised to a girl he wants to impress.
23	Cousins Once Removed	2007-10-13
Jeremy's cousin Patrick visits and problems arise when Patrick lets Herve look at Jeremy's computer. Our heroes' mission is soon compromised and Aelita's fake identity is uncovered. Only a trip back in time can fix this situation.
22	A Space Oddity	2007-10-06
Yumi and Odd travel into outer space on a mission to destroy a newly-discovered super computer with a dangerous defense system. Meanwhile, Yumi's family cares for Odd's dog during a surprise dorm inspection at school.
21	Canine Conundrum	2007-09-29
Odd's dog Kiwi is banished to the factory after another incident at the dorm. Meanwhile, XANA takes control of Jeremy's robot dog, Kiwi2 and turns it into an attack dog, so Aelita travels into Lyoko to deactivate the tower controlling it.
20	Kadic Bombshell	2007-09-22
The beautiful new exchange student is very interested in Odd and he attempts to woo her by showing her the super computer. But when she touches the computer, it creates a series of problems with disastrous results for those in Lyoko.
19	Guided Missile	2007-09-15
Jeremy wins a ride in the back of a military jet fighter, but when XANA takes control of the jet's computer - and its missiles, our heroes must defeat the super computer in the virtual world before the plane and its weapons hit the school.
18	Hard Luck	2007-09-08
Odd breaks a mirror, causing bad luck to follow him everywhere, including Lyoko. As the heroes make another trip to the desert, they hope the bad luck is behind them when face off against an army of XANA's Kankrelats.
17	Distant Memory	2007-08-31
While everyone is gone for the winter holidays, Aelita stays behind to watch for XANA. But she receives a message from her long-lost father inviting her to join him in the virtual world, and she accepts, realizing too late that it's a trap.
16	A Lack of Goodwill	2007-08-30
Our heroes travel to the desert to destroy a hidden super computer but their trip is cut short when the real William arrives in the computer lab. Meanwhile, Jeremy tries to prevent William's clone from being discovered by Milly and Tamiya.
15	Dog Day Afternoon	2007-08-29
Odd tries to take Kiwi to Lyoko, but ends up absorbing him instead. As a result he begins to take on dog traits. While Jeremie works on separating the two, XANA possesses a biker gang to attack Yumi.
14	Bragging Rights	2007-08-29
Our heroes return to the jungle to destroy the other super computer but are met on their way by waves of mechanical killer spiders. Meanwhile, Odd has a hard time winning a bet with Ulrich that he will stop bragging for 24 hours.
13	Lab Rat	2007-08-28
Jeremy develops a new teleportation process and sends Aelita and Odd into the jungle to destroy another super computer. But William learns how to cut off the process, bringing them back to Lyoko to battle his mechanical spiders.
12	Lost at Sea	2007-08-27
Hiroki steals Yumi's diary and Ulrich finds it. During an attempt to rescue William and battle XANA's monsters, Yumi becomes stranded in the Digital Sea.
11	The Lake	2007-08-24
During a class field trip to an island in the middle of a lake, XANA conjures an aquatic monster to trap the students. However, Yumi, who stayed behind to do her schoolwork, is able to enter Lyoko where she must face William one-on-one.
10	Hot Shower	2007-08-23
XANA uses a military laser to send a comet hurdling towards Earth. Meanwhile, Ulrich, Odd and Aelita are deep in the virtual world and unable to return quickly, leaving Yumi, Hiroki and Johnny to somehow save the world.
9	I'd Rather Not Talk About It	2007-08-22
Jeremy convinces the group to attend a commando camp in order to get in better shape for their battles. Soon enough, XANA attacks, with Jeremy and Jim battling in the real world and everyone else using their new skills in Lyoko.
8	Replika	2007-08-21
The group travels to one of XANA's Lyoko replicas. Aelita and Odd get into a fight after Odd's desire to sleep in gets them both in trouble. Nicolas and Herve follow them into the factory, where Jeremie is forced to distract them. William arrives to destroy the Skid, which would cut the group off from the supercomputer.
7	Crash Course	2007-08-20
Jeremy tries to teach his reluctant friends how to operate the computer in order to enter Lyoko. While Aelita is away at a music audition, XANA launches an attack and renders Jeremy unconscious, leaving the others to remember their lesson.
6	Maiden Voyage	2007-08-17
Jeremy launches the virtual ship Skidbladnir on its maiden voyage. But when a problem arises, Jeremy needs to get his notes from his dorm room and the school is in lockdown for a fire drill, leaving our heroes to face a new menace.
5	Skidbladnir	2007-08-16
Jeremy and Aelita create a virtual ship capable of taking our heroes deep into the virtual world. But working late at night is against school rules and they receive detention, so XANA sets out to destroy the ship during their punishment.
4	Wreck Room	2007-08-15
William is stuck in Lyoko and the clone Jeremy created to replace him in school is elected manager of the school's new recreation room. XANA possesses the clone, causing him to destroy the room and it now poses a threat to the students.
3	Opening Act	2007-08-30
The drummer for a famous rock group, The Subdigitals, visits Kadic in search of young musical talent. Aelita wants to show off her skills, but XANA's attempts to kidnap her might prevent her musical dreams from coming true.
2	Double Take	2007-08-14
Jeremy creates a clone of himself to attend class so he can spend more time trying to get William out of Lyoko. But when XANA wrests control of the tower used to create the clone, the new Jeremy poses a very serious threat to everyone.
1	William Returns	2007-08-13
After an epic battle, William reappears at school, but his unusual behavior has attracted the attention of Sissi, editor of the school paper. William, who is clearly still under XANA's control, kidnaps Aelita, taking her back to Lyoko.

Season 3 (show/hide)
13	Final Round	2006-11-08
Aelita and new warrior William are forced to battle XANA while the others attend to their schoolwork. But when XANA wins the battle and turns William against the others, they must act quickly to save Lyoko in their most difficult battle.
12	Double Trouble	2006-11-07
The students' grades are becoming affected by all the time they've spent fighting XANA, so they suggest adding William to the team, but Yumi is against it. However, the super computer's latest attack may be bad enough to change her mind.
11	Triple Trouble	2006-11-06
Jeremy gives Odd the ability to teleport himself across short distances within Lyoko, but the initial test results in three Odds being created. The clones don't get along so well and have split up in town while XANA launches a new attack.
10	Nobody in Particular	2006-11-03
During a test to materialize Ulrich directly into Sector 5, his mind and body become separated, leaving Ulrich's body trapped on Lyoko and his spirit stuck on Earth. What's worse, Xana possesses Ulrich's body and uses it to attack the core. Meanwhile, Susan, disappointed with Ulrich's bad grades, tries to place him in remedial classes.
9	Sabotage	2006-11-02
When Xana sabotages the supercomputer, weird bugs begin cropping up in Lyoko. Since the attack keeps draining power from the supercomputer, Aelita purposefully wipes out The Ice Sector leaving The Mountain Sector left.
8	Temporary Insanity	2006-11-01
Ulrich and Odd return from a mission on Lyoko, but XANA has infected them with a virus causing them to believe they are seeing monsters in the real world. Jeremy knows how to help them, but XANA has launched another attack in Sector 5.
7	The Secret	2006-10-21
William discovers Jeremy working in the factory and Jeremy attempts to go back in time to erase his memory. But when XANA attacks, it becomes impossible to go back and William must now help defeat XANA in the virtual world.
6	The Pretender	2006-10-14
Yumi's classmate Johnny has a crush on her and won't let her out of his site, making it hard to help her friends battle the swarm of birds XANA sent to attack them. When she gets hurt the warriors must go back in time in order to save her.
5	Aelita	2006-10-07
Aelita gets mad at Jeremie and she and Odd go into Lyoko without telling anybody. On Lyoko, Xana creates a diversion to get everybody to deactivate the tower in The Mountain Sector while the monsters worked on destroying the core of Lyoko. Jeremie and Aelita find a strand of DNA that belongs to Franz Hopper, indicating he may be still alive.
4	False Lead	2006-09-30
When Xana hacks into a weapon's manufacturing computer network and leaves a paper trail pointing to Jeremie, government agents arrive at the school looking for him. Then, the whole gang arrive at the factory. When they end up tracking Jeremie to the factory, Xana possesses them for an attack on the supercomputer itself in The Ice Sector, and in The Mountain Sector.
3	Tidal Wave	2006-09-23
Xana attacks the Lyoko warriors by possessing a large amount of food. At the same time, he bugs up The Mountain Sector by rising the digital sea, but Odd and Aelita go to Sector 5 to stop him. Xana also mounts an attack on Lyoko's core at the same time.
2	Lyoko Minus One	2006-09-16
XANA tries to destroy all of the surface sectors on Lyoko -- the only way for our heroes to access Sector 5. They need Jeremy's help getting directly into Sector 5, but he's busy running for election to the Academic Council, against Odd!
1	Straight to Heart	2006-09-09
Returning from a strangely calm summer vacation, our heroes are faced with three new problems: Odd is not in the same class as the others, XANA is coming back in force, and he is attacking in the 5th territory. To get into the same class as his classmates, Odd decides to blackmail Jim, telling him that he is going to show a disco film, in which the Jim is the lead actor. Jim still remains strict with Odd. Jeremie then discovers that XANA is attacking in a new room in the 5th territory, and that this room houses the heart of the virtual world...

Season 2 (show/hide)
26	The Key	2006-02-08
Jeremy discovers the missing key to the link between Aelita and XANA. If they can get the missing piece from XANA, they can destroy him for good. But the evil super computer is ready for the ultimate battle to save itself from destruction.
25	Revelation	2006-02-08
XANA tries to access a restricted area where Jeremy has stored all the data he's collected since the very beginning. Meanwhile, Yumi helps Odd, who has fallen into a trap on Lyoko, and Ulrich battles a spectre which is a clone of himself.
24	Contact	2006-02-01
When Sissi begins acting strangely, it's believed she is being controlled by XANA. But when she doesn't seem interested in harming the heroes, they investigate further and discover it's Franz Hopper trying to communicate with them.
23	Franz Hopper	2006-02-01
A man claiming to be Franz Hopper shows up at the computer lab and blames Jeremy for destroying his diary - the only hope of defeating XANA. With everyone now mad at Jeremy, XANA acts quickly to lure Aelita back to Lyoko.
22	Is Anybody Out There?	2006-01-25
After hearing strange noises, Sissi conducts a séance at the school. XANA takes advantage of this and sends out a ghost, sending panic across the campus. Our heroes know this is the work of XANA, but can they deactivate the tower in time?
21	Tip-Top Shape	2006-01-25
XANA possesses the school nurse during the annual Kadic physical fitness tests and she kidnaps Aelita. In order to prevent her from turning Aelita over to the Scyphozoa, Jeremy activates a tower of his own, but XANA is ready for them.
20	Déjà Vu	2006-01-18
Aelita continues to have strange visions related to a past she does not recognize. It is in fact one of XANA's schemes to draw her to Sector 5 where the Scyphozoa is waiting for her, but no one knows where the visions are coming from.
19	Cold War	2006-01-18
XANA takes control of the weather and sends temperatures plummeting so low that any outdoor exposure could cause breathing problems. Our heroes must come up with a plan to get to the factory and enter Lyoko to thwart their enemy.
18	Vertigo	2006-01-11
Ulrich's fear of heights is embarrassingly uncovered in gym class. Upset, he goes off to brood in the woods and Yumi and Odd try cheer him up. However, all is quickly forgotten when XANA dispatches a pack of wolves to wipe them out!
17	Xana's Kiss	2006-01-11
Xana creates a ghost called a polymorphic specter, that can change its shape or form at will and doesn't need to possess a host, then uses it to drive a wedge between the group by having it kiss people while disguised as them. At the end of the episode Aelita kisses Jeremy to see how he'll react. He (predictably) freezes up.
16	A Fine Mess	2005-12-14
After another successful mission on Lyoko, our heroes rematerialize, but the program has malfunctioned and switched Yumi and Odd's bodies. It seems funny at first, until they realize if not reversed, they could both disintegrate for good.
15	Ultimatum	2005-11-30
After Xana possesses the principal of the school and kidnaps Odd and Yumi, he gives Jeremie an ultimatum: deliver Aelita to the Scyphozoa or sacrifice Odd and Yumi. However, Jeremie and Aelita go to Sissi for help and Sissi agrees to be tempoarily part of the group to help save her father and eradicate Xana.
14	Attack of the Zombies	2005-11-23
When Xana possesses Kiwi, it turns the little dog into the carrier for a virulent virus that turns those it infects into zombies. Aelita and Jeremie are stuck in the cafeteria and Odd is a zombie himself. Jeremie and Aelita escape but Ulrich and the other students fight the rest.
13	A Bad Turn	2005-11-16
Ulrich and William battle to impress Yumi during Drivers Ed at school, but they must find a way to put aside their differences and work together when XANA unleashes an army of Krabes in the real world.
12	Temptation	2005-12-07
Jeremy strangely continues to insist that the group keep returning to the past, despite knowing that it only strengthens XANA's powers. What they don't realize is that XANA has tricked him and now they must help him break this obsession.
11	Common Interest	2005-11-09
When the supercomputer's uranium power source begins to fail, Xana is forced to possess a local criminal named Peter Duncan to replace it. The supercomputer's periodic shutdowns threaten not only Xana, but also Aelita, whose heart stops beating with each shutdown.
10	Marabounta	2005-11-02
Jeremy uses lessons from Franz Hopper's journal to create Marabounta, a program designed to combat XANA's monsters. But when his own creation turns against him, Jeremy must combine forces with XANA to defeat the monster.
9	The Chips Are Down	2005-10-26
When he learns Yumi may be leaving, Ulrich secretly goes back in time, in order to help her family, even though he knows this will make XANA stronger. Jeremy and Yumi decide he's gone too far and consider removing him from the group.
8	Missing Link	2005-10-19
Yumi wins a brutal battle with the Scyphozoa, but in the process, it takes away her human DNA and she can no longer return home. After numerous rescue attempts by our heroes fail, the only solution seems to be entering the dreaded Sector 5.
7	Final Mix	2005-10-12
Aelita discovers she has a talent for deejaying after filling in at the school dance. Meanwhile, XANA possesses a teacher who kidnaps Aelita and sends her to Lyoko so the Scyphozoa can steal her memory - unless our heroes can save her.
6	Saint Valentine's Day	2005-10-05
Aelita receives a necklace which she believes is from Jeremy but is actually a poisoned gift from XANA. She puts it on and becomes powerless to resist the urge to go to Lyoko where XANA's trap awaits her.
5	Mister Puck	2005-09-28
Aelita's frightening visions at the Hermitage lead her to a strangely familiar plush toy. But when the toy is accidentally torn, a key is found, leading to a locker containing Franz Hopper's encrypted journal.
4	A Great Day	2005-09-21
XANA gains the ability to go back in time and our heroes discover this power also makes him stronger, to the point where he can now control human beings. After XANA possesses Sissi, the heroes realize they must take action quickly.
3	Exploration	2005-09-14
Our heroes discover Sector 5 and seek to uncover some of its secrets, but first they must overcome its many traps. Meanwhile, Yumi's parents decide to visit, and she has a tough time getting away in order to help her friends in Lyoko.
2	Uncharted Territory	2005-09-07
While Aelita adjusts to her new life on Earth, Jeremie and the others investigate the mysterious owner of the Hermitage, Franz Hopper, and his link to the supercomputer, Lyoko, and Xana. It is discovered that Franz Hopper was in fact a former teacher at Kadic. After being teased by Sissi, Aelita retreats to Lyoko but gets lost. Jeremie finds her in a previously undiscovered fifth sector of Lyoko, The Carthage Region.
1	New Order	2005-08-31
After discovering Aelita's link to the supercomputer and the inability to shut it down, Jeremie works hard to find new and better ways to fight Xana. He develops new vehicles for the group and new tower-scanning program that instantly detects activated towers, allowing Aelita to live on Earth. The class takes a trip to the nearby woods for a scientific field trip. Ulrich wants to partner up with Yumi, but she's already partnered up with someone named William.

Season 1 (show/hide)
26	False Start	2004-02-25
Aelita's materialization program has worked, and she's now living on Earth. When Jeremie pulls the plug on Lzoko, Aelita faints. Jeremie believes that a virus was given to her by X.A.N.A. while he was bringing her to Earth which has linked her to the supercomputer, preventing the group from shutting it off. X.A.N.A. brings his Roachters into the real world in mass numbers and unleashes them on the school.
25	Code: Earth	2004-02-18
Jeremie finally completes his materialization program and prepares to bring Aelita into the real world. At the same time, Jim's suspicions of the group have risen to the point that he's actively trying to discover their secret and he ends up causing Jeremie to injure his ankle while running away from him down stairs in the school.
24	Ghost Channel	2004-02-11
After battle against X.A.N.A. Ulrich, Odd, and Yumi are nowhere to be found. They, however, do not see anything wrong with where they are. X.A.N.A. has trapped them in a world of its own design, which is fashioned after the school to ease their suspicions. However, the world that Ulrich, Odd, and Yumi are in appears to have some glitches in it. Jeremie virtualizes himself into that world to save the others. Guest stars: David Gasman
23	Rock Bottom	2004-02-04
During a vacation period at the school, the group plans to have a party at Yumi's house. Odd promises to have a DJ at the party. This DJ, named Samantha Knight, is also his girlfriend, who goes to another school. After meeting up, she has Odd take her to the computer room. Once they arrive, she tries to steal a laptop, since she's too poor to afford one. Odd stops her, but ends up being caught by Jim. Meanwhile, X.A.N.A. causes the ground under the city to melt, making all the buildings sink.
22	Routine	2004-01-28
After many X.A.N.A. attacks in a row, Ulrich starts to get tired of fighting. He also questions his relationship with Yumi and if she feels the same way about him. X.A.N.A. activates a tower without disturbing Earth, Jeremie forces Ulrich, Odd, and Yumi all to go to Lyoko to deactivate the tower. After being virtualized, a virus infection occurs on Lyoko because X.A.N.A. sabotages the Devirtualization Program, meaning if the group is devirtualized, they will permanently perish.
21	Zero Gravity Zone	2004-01-21
Just before an official school soccer game, X.A.N.A. starts nullifying gravity by creating electromagnetic fields around specific areas. Ulrich is unable to help stop X.A.N.A. this time around, instead needing to impress his parents, who will be attending the game. The others have to stop X.A.N.A. before the entire school is sent into orbit.
20	The Robots	2004-01-14
During a school robot competition, X.A.N.A. sends a robot of his own to deal with the group. Ulrich and Yumi are forced to enlist Hervé's help to destroy it while Jeremie and Odd head to the factory to deactivate the tower.
19	Frontier	2004-01-07
When Jeremie yells at Aelita, he tries to go to Lyoko to apologize. Unfortunately, while Yumi is transferring him, she makes a scanner error, which leaves him trapped in a virtual limbo between Lyoko and the real world, so Aelita has to retrieve data to recover Jeremie without support in order to bring Jeremie back, but when she gets to the Mountain Sector, there are a couple of Blocks guarding the tower.
18	Killer Music	2003-12-31
When X.A.N.A. creates an MP3 file that puts anyone who listens to it into a coma, Odd ends up being the first victim. Soon, the rest of the city begins to follow, including Ulrich and Jeremie.
17	Amnesia	2003-12-24
When Susan gives a lesson on nanotechnology, she has small machine designed to produce the little robots as an example. X.A.N.A. has infected the machine, so when they find it filled with gel, Odd carelessly ends up pushing Ulrich's face into a small scoop of it. Later on, Ulrich gets a headache and faints. When he wakes up, his memory is gone.
16	Claustrophobia	2003-12-17
Theo takes an interest in Sissi, Hervé becomes jealous and tries to get him expelled. X.A.N.A. possesses the cafeteria during lunch, trapping most of the students inside its electrified walls. Jeremie and Yumi leave the cafeteria before this takes place. Now Yumi has to get Aelita to the tower by herself before the cafeteria collapses in on itself.
15	Laughing Fit	2003-12-10
In class, Susan teaches the class about nitrous oxide, more commonly known as laughing gas, and its effects. It can be dangerous if not neutralized by water quickly. During a school production of Romeo and Juliet, X.A.N.A. possesses the laughing gas in the science room and uses it to attack the gang so they would laugh themselves to death.
14	The Trap	2003-12-03
It's been a year since the group first discovered the supercomputer and Aelita, and they decide to throw a surprise party for Aelita. Sissi catches wind of the party and follows Ulrich and Yumi to the factory. On the way there, X.A.N.A. possesses the factory as a whole. X.A.N.A. traps Ulrich, Yumi and Sissi in the elevator and drops them to the bottom of the shaft.
13	Just in Time	2003-11-26
Jeremie materializes a single hair of Aelita's. Meanwhile, different parts of the school begin to crumble apart. Jeremie learns that his first test damaged Aelita's program, and she'll be deleted if she tries to deactivate a tower. On top of that, they learn that X.A.N.A. is responsible for the damage being caused to the school by using ultrasonic sound waves, which continues to get worse.
12	Swarming Attack	2003-11-19
After failing with an army of rats, X.A.N.A. attempts a similar tactic using hornets. Meanwhile, Ulrich gets a letter from Yumi saying that she loves him. He's not quite sure how to respond, so he avoids talking to her about it.
11	Plagued	2003-11-12
X.A.N.A. possesses a rat that tries to sneak a bite from the school's kitchen. His creation goes on biting other rats, putting them under his control. Meanwhile, the school counselor has been watching Jeremie and believes him to be a gifted student. As such, he believes that Jeremie would be better off at a more advanced school and decides to give him an aptitude test. During the test, X.A.N.A.'s rat army attacks the school.
10	The Girl of the Dreams	2003-11-05
After Jeremie fails zet again to materialize Aelita, a student Taelia arrives at school that looks exactly like her. Jeremie is convinced that it must be her. The others aren't quite as convinced, but Jeremie insists that the materialization process must have caused her to lose her memory. X.A.N.A. possesses the samurai armor that Yumi brought to school and sets it on the group to chase them.
9	Satellite	2003-10-29
During class, everyone's cell phones suddenly go off, and all of them are confiscated. Sissi is not happy about this and organizes a protest in response. Yumi joins the protest, since having cell phones is a necessary part of the group's fight against X.A.N.A. X.A.N.A. is using the school's antenna to take over the nearby television antenna. From there, he could take over a laser-equipped, military satellite.
8	End of Take	2003-10-22
Famous director James Finson announces that he plans to make a movie in the city, using the factory as their primary location. Ulrich tries to convince Finson that making a movie there would be a bad idea. X.A.N.A. possesses the alien monster prop and uses it to capture Ulrich and Sissi and use them as bait for the others.
7	Image Problem	2003-10-15
An unexplained incident on Lyoko ends up devirtualizing Yumi without any cause, she is taken to the infirmary. After waking up, she attacks Yolanda and continues to act weird wanting to go to Lyoko. Jeremie won't let them, cause he wants to know what caused her devirtualization. On Lyoko, Aelita finds several Roachters guarding an orange sphere-Guardian, and informs Jeremie.
6	Cruel Dilemma	2003-10-08
Jeremie's materialization program for Aelita is finished, but is only good for one use. In turn, X.A.N.A. possesses two bulldozers and sets them on the factory to prevent Aelita's materialization from taking place. Odd goes to Lyoko while Ulrich tries to stop the bulldozers.
5	Big Bug	2003-10-01
X.A.N.A. manages to disable much of the city's infrastructure. Two trains that are completely automatic are put on a collision course, one of which contains a load of highly and deadly toxic chemicals. Yumi and Ulrich go to help Aelita, but Odd is forced to stay because Sissi tells on him to Jim for having Kiwi since he pulled a prank on her.
4	Log Book	2003-09-24
Sissi finds and steals Ulrich's diary, so he is blackmailed into being her boyfriend. During a trip to a swimming pool, Jeremie and Yumi have the opportunity to find it. The new electric bus that is being used for the field trip is possessed by X.A.N.A. and starts acting weird as a result.
3	Holiday in the Fog	2003-09-17
After Jeremie and Ulrich paint funny graffiti of Jim on aschool wall, Sissi overhears him talking about X.A.N.A. She gets her father to let her stay there during the vacation so she can discover the group's secret. X.A.N.A. takes the opportunity to possess several barrels full of poison and turns the poison into a deadly, living gas.
2	Seeing Is Believing	2003-09-10
Group needs a drummer for a traditional rock band. Nicolas turns out to be the best, but Odd doesn't want anything to do with him. Meanwhile, X.A.N.A. tries to overload a nuclear power plant by storing electricity in a transformer and unleashing it on the plant all at once. Unsure if they can stop such an event, , they decide to tell the authorities.
1	Teddy Gozilla	2003-09-03
Milly and Tamiya are doing a report on the school prom. Milly tries to ask Ulrich out, and he turns her down because he's going to the dance with Yumi. Upset, Milly storms off. X.A.N.A. possesses her teddy bear, turns it roughly twostories high and uses it to attack those who had made fun of her.

Season 0 (show/hide)
5		2018-05-22
No description available.
4		2018-05-15
No description available.
3	Garage Kids	2006-10-22
Garage Kids was a short film in English representing a preliminary project. It introduces the main characters, the concept of middle schoolers fighting in secret in a virtual world against an evil artificial intelligence, and the phrase "can you keep a secret?", which is reused both in the Code Lyoko series and as the series' advertising slogan. In Garage Kids, the virtual world was much more complex in its design, unusable for a series. Aelita did not exist. Odd is presented as having joined the group of heroes when they were already fighting against the AI, while the prequel to Code Lyoko shows that the group was formed when the virtual world was discovered. Yumi could use her telekinesis on Earth. The presentation at the Code Lyoko show claimed that "Yumi is telepathic8" (sic) and that Ulrich can move at the speed of light. It is unclear whether there was confusion between telepathy and telekinesis or whether she was meant to combine the two powers.
2	Xana Awakens, Part 2	2006-10-21
Realizing the danger of the supercomputer, Jeremie decides to shut it down, but not before bringing Maya into the real world. Meanwhile, an electric orb hunts Jeremie and friends. In Lyoko, Ulrich, Odd and Yumi work together to get Maya to the tower under the assumtion that it will bring her to the real world. Instead, it stops down Xana's attack rather than materializing her. Maya discovers her real name is Aelita when shutting down the tower.
1	Xana Awakens, Part 1	2006-10-21
In a prequel to the series, Jeremie discovers a supercomputer in an abandoned factory. Within, he finds an artificial intelligence he decides to name Maya. The rest of the group begins to meet one another. Ulrich and Yumi end up in the same martial arts class, Odd is new in school and gets roomed with Ulrich and Kiwi tears up Ulrich's things. Ulrich and Odd go into the virtual world for the first time.

(Source: thetvdb.com)

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