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Season 4

Code Lyoko

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Season 4 Episodes

S04 Episode

Lab Rat

Jeremy develops a teleportation device, and Aelita and Odd find themselves deep in the Amazonian jungle.

23 mins

S04 Episode 1

William Returns

Jeremy and Aelita manage to reconstruct part of Lyoko: Sector 5.

23 mins · Fri, 18 May 2007

S04 Episode 2

Double Take

Jeremy clones himself to go to gym class in order to work on bringing William back from Lyoko.

23 mins · Tue, 12 Jun 2007

S04 Episode 3

Opening Act

The drummer for the famous rock group, The Subdigitals comes to visit the school.

23 mins · Tue, 19 Jun 2007

S04 Episode 4

Wreck Room

A recreation lounge room is unveiled for the students at the academy. William's body double, created by Jeremy to replace the Lyoko prisoner, is elected student manager.

23 mins · Tue, 26 Jun 2007

S04 Episode 5

Skidbladnir

Jeremy and Aelita are close to creating a virtual ship that can take the Lyoko Warriors inside the World Wide Web.

23 mins · Tue, 3 Jul 2007

S04 Episode 6

Maiden Voyage

Pressured by the eager and impatient Lyoko Warriors, Jeremy agrees to launch the virtual ship Skidbladnir on its maiden voyage.

23 mins · Tue, 10 Jul 2007

S04 Episode 7

Crash Course

XANA decides to target Jeremy and Aelita with their attacks, which worries Jeremy, as the others don't know how to use the Supercomputer on their own.

23 mins · Tue, 17 Jul 2007

S04 Episode 8

Replika

The Lyoko Warriors explore a new virtual world that Xana created as a replica of Lyoko.

23 mins · Tue, 24 Jul 2007

S04 Episode 9

I'd Rather Not Talk About It

Jeremy is convinced that the band of Lyoko Warriors needs to get into shape to better fight against Xana. Who better than Jim, a former Special Forces drill sergeant, to whip them into shape.

23 mins · Tue, 31 Jul 2007

S04 Episode 10

Hot Shower

Using a military satellite, Xana manages to alter the path of a comet, which now threatens to crash into the academy and the factory Yumi, with help from Hiroki and Johnny, tries to stop it.

23 mins · Tue, 14 Aug 2007

S04 Episode 11

The Lake

Ms. Hertz brings her bio class to the lake to teach them about ecosystems.

23 mins · Tue, 21 Aug 2007

S04 Episode 12

Lost at Sea

Hiroki steals his sister's diary to try to impress Milly and provide her with some secrets.

23 mins · Tue, 28 Aug 2007

S04 Episode 13

Bragging Rights

When the gang stumble upon the super quantum computer in a jungle factory, they decide to destroy it.

23 mins · Sat, 8 Sep 2007

S04 Episode 14

Dog Day Afternoon

During a mission, Odd sneaks Kiwi onto Lyoko with him, against Jeremy's wishes.

23 mins · Sat, 15 Sep 2007

S04 Episode 15

A Lack of Goodwill

Jeremy becomes embarrassed and troubled by the increasingly human behaviour of William's clone.

23 mins · Sat, 22 Sep 2007

S04 Episode 16

Distant Memory

Aelita stays alone at the academy over the holidays to better keep an eye on Xana.

23 mins · Sat, 29 Sep 2007

S04 Episode 17

Hard Luck

The heroes visit the desert base and stumble onto a disturbing discovery.

23 mins · Sat, 6 Oct 2007

S04 Episode 18

Guided Missile

Jeremy wins a ride in the back of a jet fighter, but surprisingly he doesn't seem too pleased about it.

23 mins · Sat, 13 Oct 2007

S04 Episode 19

Kadic Bombshell

Sissi hosts a beautiful pen-pal from Iceland,who drives all of the boys crazy.

23 mins · Sat, 20 Oct 2007

S04 Episode 20

Canine Conundrum

The gang of Lyoko Warriors are sick and tired of Odd's dog, Kiwi, who constantly destroys their property.

23 mins · Sat, 3 Nov 2007

S04 Episode 21

Space Oddity

Odd begs Yumi to hide Kiwi at her parents' house for a dorm inspection.

23 mins · Sat, 17 Nov 2007

S04 Episode 22

Cousins Once Removed

Jeremy's cousin is a surprise new student enrolled at Kadic Academy.

23 mins · Sat, 17 Nov 2007

S04 Episode 23

Music to Soothe the Savage Beast

Aelita DJs the opening set for the Subdigitals concert, but struggles to overcome her issues with stage fright.

23 mins · Sat, 8 Dec 2007

S04 Episode 24

Wrong Exposure

Aelita discovers a photo of herself with Franz Hopper at the Hermitage. Jeremy attempts to extract information from the picture, as math problems are visible on a chalkboard in the background.

23 mins · Sat, 15 Dec 2007

S04 Episode 25

Bad Connection

When Odd's parents decide to drop by for a visit, he starts complaining about them like any teenager would.

23 mins · Sat, 22 Dec 2007

S04 Episode 26

Cold Sweat

As Ulrich and Aelita battle a new monster, Odd and Yumi are teleported to a base in Siberia.

23 mins · Sat, 5 Jan 2008

S04 Episode 27

Down to Earth

The Lyoko Warriors return to Siberia to free William from Xanas clutches.

23 mins · Sat, 17 Nov 2007

S04 Episode 28

Fight to the Finish

Jeremie continues work on his multi-agent system; Aelita has nightmares about her father being killed by Xana.

23 mins · Sat, 10 Nov 2007

S04 Episode 29

Echoes

Following their victory against Xana, the heroes gather to shut down Supercomputer.

24 mins · Sat, 17 Nov 2007

S04 Episode 30

Echoes

With their mission completed, the group looks back on all their fond memories of Lyoko. Sissi, meanwhile, plants a tracking device on Ulrich in order to discover their secret. When it comes time to shut down the supercomputer, all but Yumi are unwilling to go through with it: Aelita is still holding onto the hope that her father can somehow be saved, Jeremie doesn't want to take away the thing which made them friends, and Odd and Ulrich both liked being heroes. While they muse over their attachments to Lyoko, Sissi finds her way into the computer lab, and Jeremie's open diary reveals the whole of their adventures. When Sissi tries to explain this to her father, he believes she has lost it and sends her to the infirmary. A return to the past deals with that problem. Ulrich stops Sissi from planting the tracker on the repeat attempt, and the quintet invites her as a friend. Once more at the supercomputer, the group unanimously decides to shut it down, closing the book on their adventures, for now.

23 mins · Sat, 10 Nov 2007

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