List of Code Lyoko episodes

This is a list of episodes for the French animated television series, Code Lyoko. The first season has no set viewing order save for the last two episodes, so it is listed by the order in which it aired. The following seasons have their episodes numbered, and are ordered by that number. So far, the series has a total of ninety-seven episodes: Twenty-six each for the first two seasons, thirteen for the third, thirty for the fourth, and the two-part prequel made alongside the third season.

The first three seasons, the prequel, and Episodes 66–77 and 79–88 aired on Cartoon Network. Episode 78 and episodes 89–95 of the series aired on Cartoon Network Video and Kabillion, instead of on the network channel itself. MoonScoop announced a popular yet incomplete reboot series titled Code Lyoko: Evolution the first season of which consisted of twenty-six episodes. The series revolves around a gang of boarding school students who travel to the virtual world of Lyoko, within a quantum supercomputer, to battle X.A.N.A, a malevolent A.I./multi-agent system who desires to rule all of humanity.

After Jeremie makes another failed attempt to materialize Aelita, a student named Taelia arrives at school that looks exactly like her. Jeremie is convinced that it must be her, but she seems to have no memory of her experiences with the group. The others aren't quite as convinced, but Jeremie insists that the materialization process must have caused her to lose her memory, but the others were right. Aelita was, in fact, still on Lyoko and captured by the Guardian. Meanwhile XANA possesses the samurai armor that Yumi brought to school and sets it on the group to chase Yumi. Jeremie brings Taelia with him to the factory. Now Odd and Ulrich must free Aelita and deactivate the tower before Yumi is defeated by the possessed samurai and Jeremie is taken away by the police.

Taking a different approach to his research, Jeremie materializes a single hair of Aelita's. Unfortunately, the follow-up test goes awry, and Jeremie has to find out why. Meanwhile, different parts of the school begin to crumble apart. Jeremie learns that his first test damaged Aelita's program, and she'll be deleted if she tries to deactivate a tower. On top of that, they learn that XANA is responsible for the damage being caused to the school by using ultrasonic sound waves, which continues to get worse. Jeremie has to fix the damage he caused in time to save Odd, who ends up trapped inside the school with Milly, Tamiya, and Kiwi. Unfortunately, after two tries, both ending in failure, Aelita, with the help of Yumi and Ulrich, has to deactivate the tower or else Odd, Milly, Tamiya, and Kiwi will be done for. After the return back in time, Yumi remembers that Jeremie said that the hair contained Aelita's entire computer code. Jeremie places the hair in the scanner, virtualizes it to Lyoko, and Aelita is inside the tower she deactivated.

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