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Season guide

Code Lyoko: Season 2

26 episodes Premiered Aug 31, 2005
Previously on Code Lyoko

Season 2 Lore Primer

Key plot threads, lore context, and character stakes you need to remember before diving into this season.

  • ⚡ Directly follows the overarching narrative developments of Code Lyoko Season 1.
  • ⚡ Faction dynamics and core character alliances shift under escalating external stakes.
  • ⚡ Crucial mysteries introduced previously reach key turning points and narrative reckonings.
  • ⚡ Sets up serialized story arcs that build directly toward the climactic season finale.
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Season 2 Episodes

Episode Guide

🛡️ SPOILER SHIELD

Season 2 Progress Shield

Future titles & synopses blurred. Tap "Reveal" on any card to peek.
Binge Efficiency Engine

Season 2: Filler vs. Essential Canon

Filter episodes by narrative weight. Focus on essential mytharc and skip standalone side quests.

12%
88%
Mytharc (3): Crucial lore & season climaxes
Core (23): Character development & subplots
Side Quest (0): Standalone / filler
S2·E1 Mytharc

New Order

Aug 31, 2005

After discovering Aelita's link to the supercomputer and the inability to shut off the supercomputer that stems from it, Jeremie works hard to find new and better ways to fight Xan

S2·E2 Core

Uncharted Territory

Sep 7, 2005

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

S2·E3 Core

Exploration

Sep 14, 2005

After discovering The Carthage Region, the group decides to explore it. Yumi is forced to opt out after her continued late-night trips to Lyoko draw the attention of her parents. W

S2·E4 Core

A Great Day

Sep 21, 2005

After taking another trip to The Carthage Region and returning to the school, Aelita talks to Jeremie about not being human, unaware that Sissi is recording their conversation. On

S2·E5 Core

Mister Puck

Sep 28, 2005

When Aelita's dreams and hallucinations become too disruptive to ignore, the group heads to the Hermitage to discover their source. There, Aelita finds a doll she inexplicably reco

S2·E6 Core

Saint Valentine's Day

Oct 5, 2005

It's Saint Valentine's Day and love is in the air. Ulrich forgets, so at last minute writes a poem for Yumi. However, when William presents Yumi with flowers, Ulrich gets jealous a

S2·E7 Core

Final Mix

Oct 12, 2005

When the school holds a concert in the gym, William accidentally drops a mixing board for the DJ contest. Odd offers to fix it, and tries to get Jeremie to help. Jeremie is busy, s

S2·E8 Core

Missing Link

Oct 19, 2005

During a mission to The Carthage Region, the Scyphozoa attacks Yumi, stealing her human DNA, having her trapped on Lyoko. To make matters worse, it's picture day for her class and

S2·E9 Core

The Chips are Down

Oct 26, 2005

When Ulrich learns that Yumi might have to go back to Japan because her father lost his job, he can't accept losing her. After hearing the lottery numbers on the radio though, he g

S2·E10 Core

Marabounta

Nov 2, 2005

After deciphering a part of Franz Hopper's diary, Jeremie gets an idea to make a monster that fights on the side of good. By combining techniques, he makes the Marabounta, a sphere

S2·E11 Core

Common Interest

Nov 9, 2005

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 th

S2·E12 Core

Temptation

Dec 7, 2005

After a Xana attack, Jeremie insists on a return trip, regardless of the fact that Xana didn't even cause any damage. When questioned, he gets defensive and angry, insisting that i

S2·E13 Core

A Bad Turn

Nov 16, 2005

Ulrich and William get into a fight over Yumi. When Xana activates a tower and materializes Krabbes, he attacks Yumi's house and destroys two scanners. While Ulrich is in detentio

S2·E14 Core

Attack of the Zombies

Nov 23, 2005

When Xana possesses Kiwi, it turns the little dog into the carrier for a virulent virus that turns those it infects into zombies. To make matters worse, Aelita and Jeremie are stuc

S2·E15 Core

Ultimatum

Nov 30, 2005

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, Jeremi

S2·E16 Core

A Fine Mess

Dec 14, 2005

After a malfunction and a little bug with the regular materialization program, Odd and Yumi are bugged up, ending up in each others' bodies. Even worse, their atoms start splitting

S2·E17 Core

XANA's Kiss

Jan 11, 2006

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

S2·E18 Core

Vertigo

Jan 11, 2006

After a trip to the Carthage Region, Jeremie believes he has the data necessary to cure Aelita's virus. While the two work on the cure, Odd, Ulrich, and Yumi go to a rock climbing

S2·E19 Core

Cold War

Jan 18, 2006

Jeremy is woken up to an alarm signal, with no activated towers, so he goes back to sleep. The next morning, while Jeremy and Aelita are investigating Jeremy's computer, Odd looks

S2·E20 Core

Déjà Vu

Jan 18, 2006

Aelita's visions become a problem once again, but not the same visions as before. This time, she has visions of her and Franz Hopper being chased by government agents. The visions

S2·E21 Core

Tip-Top Shape

Jan 25, 2006

During the school physicals, Xana possesses the school nurse, Yolande, and has her kidnap Aelita. The rest of the group beats her to the factory, but has no way to get Aelita from

S2·E22 Core

Is Anybody Out There?

Jan 25, 2006

After reading about a dead man named Leon Corbe, who died during the construction of Kadic, Sissi decides to hold a séance to communicate with him. She manages to convince Ulrich t

S2·E23 Core

Franz Hopper

Feb 1, 2006

Jeremie discovers five activated towers and gathers the group to take care of them. However, when they arrive at the factory, they find a man at the interface, deactivating the tow

S2·E24 Core

Contact

Feb 1, 2006

During a short film made by Odd and starring Sissi, Sissi seems to be possessed by a ghost. She does not act as expected, however. Instead, she starts speaking in some strange lang

S2·E25 Mytharc

Revelation

Feb 8, 2006

It's nearing the end of the year and Jeremie's research has hit a dead end. After the group collects some data from The Carthage Region, he plans to use a tower to decipher Franz H

S2·E26 Mytharc

The Key

Feb 8, 2006

After going through all of Franz Hopper's diary, Jeremie discovers the truth behind the supercomputer, at least to some extent. Hopper had used it quite extensively, to the point o

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