The BEST episodes of Code Lyoko season 4
Every episode of Code Lyoko season 4, ranked from best to worst by thousands of votes from fans of the show. The best episodes of Code Lyoko season 4!
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.
#1 - Distant Memory
Season 4 - Episode 17 - Aired 8/31/2007
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.
#2 - Cousins Once Removed
Season 4 - Episode 23 - Aired 10/13/2007
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.
#3 - Wrong Exposure
Season 4 - Episode 25 - Aired 10/27/2007
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.
#4 - The Lake
Season 4 - Episode 11 - Aired 8/24/2007
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.
#5 - Crash Course
Season 4 - Episode 7 - Aired 8/20/2007
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.
#6 - Hot Shower
Season 4 - Episode 10 - Aired 8/23/2007
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.
#7 - Bragging Rights
Season 4 - Episode 14 - Aired 8/29/2007
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.
#8 - A Lack of Goodwill
Season 4 - Episode 16 - Aired 8/30/2007
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.
#9 - Maiden Voyage
Season 4 - Episode 6 - Aired 8/17/2007
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.
#10 - Replika
Season 4 - Episode 8 - Aired 8/21/2007
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.
#11 - I'd Rather Not Talk About It
Season 4 - Episode 9 - Aired 8/22/2007
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 Jim battling in the real world and everyone else using their new skills in Lyoko.
#12 - Down to Earth
Season 4 - Episode 28 - Aired 11/3/2007
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.
#13 - Fight to the Finish
Season 4 - Episode 29 - Aired 11/10/2007
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.
#14 - Skidbladnir
Season 4 - Episode 5 - Aired 8/16/2007
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.
#15 - Echoes
Season 4 - Episode 30 - Aired 11/10/2007
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.
#16 - Lost at Sea
Season 4 - Episode 12 - Aired 8/27/2007
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.
#17 - William Returns
Season 4 - Episode 1 - Aired 8/13/2007
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.
#18 - Double Take
Season 4 - Episode 2 - Aired 8/14/2007
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.
#19 - Opening Act
Season 4 - Episode 3 - Aired 8/30/2007
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.
#20 - Wreck Room
Season 4 - Episode 4 - Aired 8/15/2007
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.
#21 - Lab Rat
Season 4 - Episode 13 - Aired 8/28/2007
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.
#22 - Dog Day Afternoon
Season 4 - Episode 15 - Aired 8/29/2007
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.
#23 - Hard Luck
Season 4 - Episode 18 - Aired 9/8/2007
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.
#24 - Guided Missile
Season 4 - Episode 19 - Aired 9/15/2007
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.
#25 - Kadic Bombshell
Season 4 - Episode 20 - Aired 9/22/2007
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.