Code Lyoko
More information: IMDB
Watch Code Lyoko Season 4
Episode 30
30. Echoes
aired: Tue, Aug 28, 2007
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.
Episode 29
29. Fight to the Finish
aired: Tue, Aug 28, 2007
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, and Franz Hopper sacrifices himself to save the warriors.
Episode 28
28. Down to Earth
aired: Tue, Aug 28, 2007
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.
Episode 27
27. Cold Sweat
aired: Tue, Aug 28, 2007
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.
Episode 26
26. Bad Connection
aired: Tue, Aug 28, 2007
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.
Episode 25
25. Wrong Exposure
aired: Tue, Aug 28, 2007
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.
Episode 24
24. Music to Soothe the Savage Beast
aired: Tue, Aug 28, 2007
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.
Episode 23
23. Cousins Once Removed
aired: Tue, Aug 28, 2007
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.
Episode 22
22. A Space Oddity
aired: Tue, Aug 28, 2007
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.
Episode 21
21. Canine Conundrum
aired: Tue, Aug 28, 2007
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.
Episode 20
20. Kadic Bombshell
aired: Tue, Aug 28, 2007
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.
Episode 19
19. Guided Missile
aired: Tue, Aug 28, 2007
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.
Episode 18
18. Hard Luck
aired: Tue, Aug 28, 2007
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.
Episode 17
17. Distant Memory
aired: Tue, Aug 28, 2007
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.
Episode 16
16. A Lack of Goodwill
aired: Tue, Aug 28, 2007
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.
Episode 15
15. Dog Day Afternoon
aired: Tue, Aug 28, 2007
Odd takes his dog into Lyoko and ends up with uncontrollable dog behaviors in the virtual world. While Jeremy tries to separate them, Yumi battles a real world motorcycle gang possessed by XANA and Ulrich and Aelita battle William in Lyoko.
Episode 14
14. Bragging Rights
aired: Tue, Aug 28, 2007
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.
Episode 13
13. Lab Rat
aired: Tue, Aug 28, 2007
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.
Episode 12
12. Lost of Sea
aired: Tue, Aug 28, 2007
During an attempt to rescue William and battle XANA's monsters, Yumi becomes stranded in the Digital Sea. If she survives, her brother Hiroki might get killed after she learns he stole her diary and Ulrich found it.
Episode 11
11. The Lake
aired: Tue, Aug 28, 2007
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.
Episode 10
10. Hot Shower
aired: Tue, Aug 28, 2007
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.
Episode 9
9. I'd Rather Not Talk About It
aired: Tue, Aug 28, 2007
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 the instructor battling in the real world and everyone else using their new skills in Lyoko.
Episode 8
8. Replika
aired: Tue, Aug 28, 2007
Our heroes travel to a new virtual world in the Digital Sea where they engage William and a pair of XANA's Megatanks in battle. Meanwhile, Jeremy must distract a couple of schoolmates who have stumbled upon the secret factory.
Episode 7
7. Crash Course
aired: Tue, Aug 28, 2007
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.
Episode 6
6. Maiden Voyage
aired: Tue, Aug 28, 2007
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.
Episode 5
5. Skidbladnir
aired: Tue, Aug 28, 2007
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.
Episode 4
4. Wreck Room
aired: Tue, Aug 28, 2007
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.
Episode 3
3. Opening Act
aired: Tue, Aug 28, 2007
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.
Episode 2
2. Double Take
aired: Tue, Aug 28, 2007
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.
Episode 1
1. William Returns
aired: Tue, Aug 28, 2007
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.
Watch Code Lyoko Season 3
Episode 15
15. l' XANA Awakens - Part Two
aired: Tue, Aug 28, 2007
The story that started it all: Jeremy discovers a strange computer in an abandoned factory. His curiosity leads him to find Aelita trapped in the computer's virtual world and his attempt to save her unleashes the powerful enemy XANA.
Episode 14
14. l' XANA Awakens - Part One
aired: Tue, Aug 28, 2007
The story that started it all: Jeremy discovers a strange computer in an abandoned factory. His curiosity leads him to find Aelita trapped in the computer's virtual world and his attempt to save her unleashes the powerful enemy XANA.
Episode 13
13. Final Round
aired: Tue, Aug 28, 2007
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.
Episode 12
12. Double Trouble
aired: Tue, Aug 28, 2007
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.
Episode 11
11. Triple Trouble
aired: Tue, Aug 28, 2007
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.
Episode 10
10. Nobody in Particul
aired: Tue, Aug 28, 2007
Ulrich volunteers for Jeremy's latest experiment and ends up as an invisible spirit. He can only communicate by possessing someone's body. While Jeremy frantically searches for a cure, XANA ups the ante by starting an attack!
Episode 9
9. Sabotage
aired: Tue, Aug 28, 2007
A man possessed by XANA has sabotaged the super computer and Jeremy needs to fix it, but it's also the day for room inspections at school and he's unprepared. Now Aelita must save her friends and deactivate the tower to save the day!
Episode 8
8. Temporary Insanity
aired: Tue, Aug 28, 2007
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.
Episode 7
7. The Secret
aired: Tue, Aug 28, 2007
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.
Episode 6
6. The Pretender
aired: Tue, Aug 28, 2007
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.
Episode 5
5. Aelita
aired: Tue, Aug 28, 2007
When Jeremy refuses to help Aelita find out if her father is still alive on Lyoko, she enlists Odd's help and they travel into the virtual world. Once there, the only thing they discover is that XANA is waiting for them with an attack.
Episode 4
4. False Lead
aired: Tue, Aug 28, 2007
XANA hacks into a government computer system and makes look like the work of Jeremy. Agents discover the factory and begin questioning Jeremy, leaving XANA free to launch an attack on Lyoko and our heroes helpless to stop it.
Episode 3
3. Tidal Wave
aired: Tue, Aug 28, 2007
XANA raises the level of the digital sea, flooding Lyoko. With access to Sector 5 now blocked, Jeremy is forced to come up with a new way into the virtual world. Meanwhile, the school's new healthy meals wreak havoc on Odd's stomach.
Episode 2
2. Lyoko Minus One
aired: Tue, Aug 28, 2007
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!
Episode 1
1. Straight to Heart
aired: Tue, Aug 28, 2007
The students return from vacation and jump into action quickly when they discover XANA's new scheme: to rip out the heart of Lyoko and wipe it off the digital map by destroying an undiscovered sphere in Sector 5.
Watch Code Lyoko Season 2
Episode 26
26. The Key
aired: Tue, Aug 28, 2007
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.
Episode 25
25. Revelation
aired: Tue, Aug 28, 2007
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.
Episode 24
24. Contact
aired: Tue, Aug 28, 2007
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.
Episode 23
23. Franz Hopper
aired: Tue, Aug 28, 2007
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.
Episode 22
22. Is Anybody Out There
aired: Tue, Aug 28, 2007
After hearing strange noises, Sissi conducts a sÃance 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?
Episode 21
21. Tip_Top Shape
aired: Tue, Aug 28, 2007
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.
Episode 20
20. Deja vu
aired: Tue, Aug 28, 2007
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.
Episode 19
19. Cold War
aired: Tue, Aug 28, 2007
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.
Episode 18
18. Vertigo
aired: Tue, Aug 28, 2007
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!
Episode 17
17. XANAs Kiss
aired: Tue, Aug 28, 2007
Love fever and jealousies have taken over the academy and threaten to separate our heroes forever. But even when they discover it's XANA's evil plan, can they overcome their jealousy in time to save Aelita from the Scyphozoa's clutches?
Episode 16
16. A Fine Mess
aired: Tue, Aug 28, 2007
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.
Episode 15
15. Ultimatum
aired: Tue, Aug 28, 2007
XANA possesses Kadic's headmaster, who then kidnaps Yumi and Odd. In order to save them, Aelita is ordered to go to the edge of the Ice Sector on Lyoko. But Jeremy and Ulrich have their own idea to thwart XANA's plan.
Episode 14
14. Attack of the Zombies
aired: Tue, Aug 28, 2007
XANA uses Kiwi the dog to spread a virus which turns people into zombies. As panic spreads everywhere, our heroes find a way to escape and get to the factory, in order to deactivate the tower before it's too late!
Episode 13
13. A Bad Turn
aired: Tue, Aug 28, 2007
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.
Episode 12
12. Temptation
aired: Tue, Aug 28, 2007
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.
Episode 11
11. Common Interest
aired: Tue, Aug 28, 2007
The battery which powers the super-computer is running out of fuel, so XANA possesses a criminal to steal some uranium. Although our heroes want to stop him, they are forced to help XANA since Aelita's survival is also at risk!
Episode 10
10. Marabounta
aired: Tue, Aug 28, 2007
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.
Episode 9
9. The Chips are Down
aired: Tue, Aug 28, 2007
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.
Episode 8
8. Missing Link
aired: Tue, Aug 28, 2007
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.
Episode 7
7. Final Mix
aired: Tue, Aug 28, 2007
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.
Episode 6
6. St. Valentine's Day
aired: Tue, Aug 28, 2007
Aelita receives a necklace which she believes is from Jeremy but is actually a poisoned gift from XANA. Her friends must stop her before she puts it on and becomes powerless to resist the urge to go to Lyoko where XANA's trap awaits her.
Episode 5
5. Mister Puck
aired: Tue, Aug 28, 2007
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.
Episode 4
4. A Great Day
aired: Tue, Aug 28, 2007
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.
Episode 3
3. Exploration
aired: Tue, Aug 28, 2007
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.
Episode 2
2. Uncharted Territory
aired: Tue, Aug 28, 2007
Aelita becomes frustrated with life on Earth, so she returns to Lyoko and is kidnapped by XANA and taken to an unknown sector. Meanwhile, our heroes uncover interesting clues at the Hermitage, the house where Aelita had strange visions.
Episode 1
1. New Order
aired: Tue, Aug 28, 2007
Aelita now lives on Earth and has moved into the academy with her friends. But when XANA takes over a nearby house and lures our heroes into his trap, it seems to be home to a mystery, and Aelita is overwhelmed by troubling visions there.
Watch Code Lyoko Season 1
Episode 26
False Start
aired: Mon, May 24, 2004
Aelita is successfully brought to life on Earth, but when our heroes attempt to finally destroy XANA, they discover he has placed a virus in her which binds his health to hers. She must now return to Lyoko until Jeremy finds an antidote.
Episode 25
Code: Earth
aired: Fri, May 21, 2004
Jeremy finally discovers the key to bringing Aelita to earth as a human being. But before the big moment, he must retrieve his notes from his room where Jim is waiting to confront him about the secret virtual world known only to our heroes.
Episode 24
Ghost Channel
aired: Thu, May 20, 2004
XANA traps Ulrich, Odd and Yumi in a virtual universe and they don't realize there's a fake Jeremy with them who is intent on destroying them. The real Jeremy must now save his friends single-handedly before it's too late!
Episode 23
Rock Bottom?
aired: Wed, May 19, 2004
Odd's budding romance with Samantha takes a terrible turn when she steals a laptop and Odd is blamed. Meanwhile, XANA has taken control of the school building's foundation which is now crumbling and getting to Lyoko is their only hope.
Episode 22
Routine
aired: Tue, May 18, 2004
Ulrich begins dating a new girl, which makes Yumi angry. Unfortunately, XANA sets a trap unlike anything our heroes have seen before, and unless Yumi and Ulrich can overcome their differences, no one will be able to get out of Lyoko alive.
Episode 21
Zero Gravity Zone
aired: Mon, May 17, 2004
XANA creates an ever-increasing zero-gravity zone on the field during the Kadic soccer final, forcing Ulrich to decide whether to stay with his teammates on the soccer field, or help his friends battle the super computer in Lyoko.
Episode 20
The Robots
aired: Fri, May 14, 2004
During a school robot competition, XANA secretly enters a robot of his own, creating panic and mayhem. Now Ulrich and Yumi are forced to enlist Herve's help to destroy it while Jeremy and Odd head to the factory to battle in Lyoko.
Episode 19
Frontier
aired: Thu, May 13, 2004
Jeremy convinces Yumi to send him to Lyoko so he can speak in-person with Aelita, but when she hits the wrong key, he becomes stuck between worlds. While they struggle to bring Jeremy back, XANA unleashes a deadly attack on Aelita.
Episode 18
Killer Music
aired: Wed, May 12, 2004
After Odd and Sissi go into a trance and then to the hospital when their pulse slows, Jeremy, Ulrich and Yumi discover that XANA has been sending out a song on the radio which is doing this to everyone who hears it.
Episode 17
Amnesia
aired: Tue, May 11, 2004
XANA creates viruses which attack human brains, causing amnesia. Sissi takes advantage of this and convinces Ulrich that Odd, Yumi and Jeremy are his enemies. Now they must battle their friend and find a way to reverse the viruses.
Episode 16
Claustrophobia
aired: Mon, May 10, 2004
The students are trapped inside their cafeteria when XANA transforms the metal siding of the school's walls into an electrified prison cell. Only Yumi, who was not inside, can stop this attack and she gets some help from Aelita in Lyoko.
Episode 15
Laughing Fit
aired: Fri, May 7, 2004
XANA unleashes an attack of laughing gas on the school, inducing fits of laughter which leave our heroes dangerously short of breath. While they try to thwart XANA's latest scheme, Yumi is concerned about her parents who are about to visit.
Episode 14
The Trap
aired: Thu, May 6, 2004
XANA takes control of the factory and traps Yumi, Ulrich and Sissi in the elevator, which plummets to the ground and begins filling with water. Yumi escapes and gets help from Odd and Aelita to deactivate a tower on Lyoko before they drown.
Episode 13
Just in Time
aired: Wed, May 5, 2004
Jeremy has trouble materializing Aelita, and actually makes matters worse. While he tries to de-bug her program, XANA launches his latest attack, putting Odd in grave danger. Our heroes must decide: Defeat XANA or sacrifice Aelita?
Episode 12
Swarming Attack
aired: Tue, May 4, 2004
Sissi's jealousy stirs up trouble between Ulrich and Yumi. When XANA contaminates the wasps on the school grounds and send them to attack, Odd and Jeremy are worried the lack of team spirit may cause them to lose this battle.
Episode 11
Plagued
aired: Mon, May 3, 2004
Jeremy's teachers are convinced he's a gifted student and suggest he switch to a more advanced school. Meanwhile, XANA unleashes an army of attack rats and Jeremy is stuck in exams; without him, our heroes can't enter Lyoko to stop XANA.
Episode 10
The Girl of the Dreams
aired: Fri, Apr 30, 2004
The new girl in school looks exactly like Aelita, and it's too much of a coincidence for Jeremy, who has been desperately trying to bring her out of Lyoko. Things get even stranger when suddenly there's no sign of Aelita on Lyoko!
Episode 9
Satellite
aired: Thu, Apr 29, 2004
XANA takes control of a nearby communications antenna and plans to use it to turn a powerful military satellite into an instrument of mass destruction. Our heroes must now do battle in Lyoko before the satellite can launch its weapons.
Episode 8
End of Take
aired: Wed, Apr 28, 2004
A movie director begins filming in our heroes' factory, so Ulrich works on the film to make sure no one discovers their secret. But that will be no easy task when XANA takes control of an alien monster prop intent on destroying the heroes.
Episode 7
Image Problem
aired: Tue, Apr 27, 2004
Yumi is held captive in Lyoko while her evil clone attempts to destroy the heroes. Meanwhile, an unsuspecting Jeremy sends Odd and Ulrich to Lyoko to help Aelita deactivate a tower, but he ends up alone, face-to-face with XANA.
Episode 6
Cruel Dilemma
aired: Mon, Apr 26, 2004
Jeremy tries to bring Aelita out of Lyoko, but XANA prevents it by taking control of nearby bulldozers which may destroy the factory. During a battle, Yumi falls in the digital sea and Aelita can't be brought to life if Yumi is to be saved.
Episode 5
Big Bug
aired: Fri, Apr 23, 2004
XANA unleashes a computer virus that wreaks havoc on the city's infrastructure. When two trains become headed on a collision course, our heroes must travel into Lyoko and stop the deadly collision from occurring.
Episode 4
Log Book
aired: Thu, Apr 22, 2004
During a field trip to the local swimming pool, XANA takes control of the electric school bus and tries to send it crashing into the city's chemical complex. Odd and Yumi travel to Lyoko to stop the bus in time, with some help from Aelita.
Episode 3
3. Holiday in the Fog
aired: Tue, May 15, 2007
Jeremy purposely gets in trouble so he can keep an eye on XANA while everyone else is gone for vacation. But when the super computer unleashes a poisonous gas, Jeremy realizes he cannot take on XANA himself and calls his friends for help.
Episode 2
2. Seeing is Believing
aired: Tue, May 15, 2007
XANA threatens to take control of and destroy a nuclear plant and our heroes decide it's time to tell the authorities about Lyoko. But when no one believes them, Yumi, Aelita, Jeremy, Odd and Ulrich now must prevent a nuclear catastrophe.
Episode 1
Teddygozilla
aired: Mon, Apr 19, 2004
XANA launches an attack by taking control of a student's teddy bear which grows to the size of a building. Odd and Aelita fight XANA from inside Lyoko while Yumi and Ulrich take on the giant teddy bear.
