1. New Order
Aired: Aug 31, 2005While on her first science field trip with the rest of the gang, Aelita begin...
2. Unchartered Territory
Aired: Sep 7, 2005Ulrich, Odd, and Jeremie continue their search for information on the inhabit...
3. Exploration
Aired: Sep 14, 2005After a couple of late nights, Yumi's parents start to get suspicious and she...
4. A Great Day
Aired: Sep 21, 2005The gang is forced to continuously relive a day after X.A.N.A. is able to tak...
5. Mister Puck
Aired: Sep 28, 2005Aelita begins to experience her recurring nightmare while she's still awake, ...
6. Saint Valentine's Day
Aired: Oct 5, 2005In Aelita's room, she is having yet another bad dream. The man in red leaves ...
7. Final Mix
Aired: Oct 12, 2005After repairing William's turntables and showing some mixing skills, Aelita i...
8. Missing Link
Aired: Oct 19, 2005In preparation for another trip to Carthage, Yumi is attacked by the Scipizoa...
9. The Chips Are Down
Aired: Oct 26, 2005Yumi reveals to her friends that there is a possibility that she might have t...
10. Marabounta
Aired: Nov 1, 2005Using the concept of marabounta and some of Franz Hopper's research, Jeremie ...
11. Common Interest
Aired: Nov 8, 2005The battery which powers the super-computer is running out of fuel, so XANA p...
12. Temptation
Aired: Dec 6, 2005After XANA's attack, Jeremie insists on a return trip, regardless of the fact...
13. A Bad Turn
Aired: Nov 15, 2005Ulrich and William battle to impress Yumi during Drivers Ed at school, but th...
14. Attack of the Zombies
Aired: Nov 22, 2005XANA uses Kiwi the dog to spread a virus which turns people into zombies. As ...
15. Ultimatum
Aired: Nov 29, 2005After XANA possesses Jean-Pierre and kidnaps Odd and Yumi, he gives Jeremie a...
16. A Fine Mess
Aired: Dec 13, 2005After another successful mission on Lyoko, our heroes rematerialize, but the ...
17. Xana's Kiss
Aired: Jan 10, 2006Love fever and jealousies have taken over the academy and threaten to separat...
18. Vertigo
Aired: Jan 10, 2006Ulrich's fear of heights is embarrassingly uncovered in gym class. Upset, he ...
19. Cold War
Aired: Jan 17, 2006XANA takes control of the weather and sends temperatures plummeting so low th...
20. Déjà Vu
Aired: Jan 17, 2006Aelita's visions become a problem once again, but not the same visions as bef...
21. Tip-Top Shape
Aired: Jan 24, 2006During the school physicals, XANA possesses the school nurse, Yolanda, and ha...
22. Is Anybody Out There?
Aired: Jan 24, 2006After hearing strange noises, Sissi conducts a sÃfance at the school. XANA ta...
23. Franz Hopper
Aired: Jan 31, 2006Jeremie discovers five activated towers and gathers the group to take care of...
24. Contact
Aired: Jan 31, 2006During a short film made by Odd and starring Sissi, Sissi seems to be possess...
25. Revelation
Aired: Feb 7, 2006After the retrieval of vital information from the fifth sector, the gang retu...
26. The Key
Aired: Feb 7, 2006With the end of the year school dance approaching, the gang sets out on a fin...