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Code: Earth
Episode No. 25
Production No. 125
Air Date May 21, 2004
Sector Forest
XANA attack method Attempt to forcefully deactivate a Passage Tower to prevent Aelita's materialization.
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Code: Earth is the 25th episode of Code: LYOKO. It aired on May 21, 2004.


At the start of this episode, Jeremie announces that he has completed his materialization program for Aelita. They want to try it out after class, but Jim catches them in the act, saying that they're gonna stay put until he tells them what their secret is. Principal Delmas shows up just in time and scolds him for being paranoid. (During this particular scene, Jim calls Team Lyoko "these little devils", indicating his overly strict attitude).

Later at the Factory, Jeremie virtualizes Odd, Yumi, and Ulrich. But when he puts in the CD it is only a music video for Odd's song, Break Break Break Dance. Then Jeremie must go back to his room to pick up the right CD.

When he gets the real CD, Jim once again finds him (calling Jeremie a "miserable little brat"), still determined to discover their secret, chases him down the steps and orders him to stop. Jeremie tumbles on the stairs and sprain his ankle during the heated chase, causing some of the students who watched him fall to blame Jim for the accident, including Heidi Klinger. Jeremie is taken to the infirmary, and Jim is fired by Principal Delmas for allowing his paranoid actions to cause harm to a student.


Jim feels guilty for what he has done, however, and decides to go into the infirmary to talk to Jeremie. Jeremie, who is now stuck in the infirmary with no way to reach the others still in Lyoko, decides to tell Jim the truth; that his suspicions were right all along. He offers to tell Principal Delmas the whole thing, about Lyoko and the Factory, so that Jim can get his job back - on the condition that Jim carries him to the factory.
Aelita finally materialized

Aelita being materialized

Jim agrees, and takes Jeremie there. Jeremie loads the materialization program, and Aelita enters a tower to be materialized. A megatank shows up and starts shooting the tower, but Aelita finally materializes in the real world. The last words of the episode come from Jeremie as he says to Aelita, "Welcome to Earth Aelita!"


  • The name of this episode comes from the code Jeremie uses to materialize Aelita, in the same way that 'LYOKO' is Aelita's code, which she uses to deactivate towers.
  • This episode is the first time a monster is seen attacking a tower.
  • Jim becomes a member of Team Lyoko in this episode for a short period of time. David Gasman himself has commented that he thinks this episode is amazing.

Preceded by:
Ghost Channel
Code: LYOKO episode
May 21, 2004
Succeeded by:
False Start