Code Lyoko, a French animated television series, was created by Thomas Romain and Tania Palumbo.
Code Lyoko premiered on the French television channel France 3, introducing audiences to the unique blend of 2D and 3D animation.
Code Lyoko began airing internationally, gaining popularity outside of France, including in the United States.
The production of the second season of Code Lyoko was underway, expanding the storyline and character development.
The last episode of Code Lyoko was broadcast, concluding the original series storyline.
Announcement of Code Lyoko: Evolution, a live-action/CGI hybrid sequel to the original animated series.
Code Lyoko: Evolution was released, continuing the story in a new format with live action and CGI.
Jeremie Belpois discovers the abandoned supercomputer in the factory's basement, leading to the creation of the virtual world Lyoko.
Jeremie and his friends use the supercomputer to activate Lyoko, and Jeremy virtualizes Aelita onto Lyoko for the first time.
Aelita gains awareness of the real world and joins the team to help combat XANA's attacks.
The team confronts XANA for the first time by destroying a tower on Lyoko to stop its attacks on the real world.
The team uses the 'Return to the Past' program to erase XANA's destruction from history for the first time.
Odd Della Robbia and Ulrich Stern join Jeremy and Aelita in fighting XANA and virtualizing into Lyoko.
Yumi becomes part of the main group fighting against XANA and participating in virtual battles on Lyoko.
The team discovers a new sector on Lyoko, the Desert Sector, after destroying several XANA towers in other sectors.
Aelita learns about her mother's connection to the supercomputer and searches for clues about her whereabouts.
XANA intensifies its attacks on the real world targeting Kadic Academy, forcing the team to respond more frequently on Lyoko.
Jeremie attempts to shut down the supercomputer to prevent XANA's threat but risks losing Aelita and Lyoko.
Aelita temporarily materializes in the real world to help overcome XANA's attacks and assist the team more actively.
Jeremie upgrades the supercomputer with new programs to defend Lyoko sectors and assist in battles against XANA.
The team initiates a final plan to eliminate XANA by destroying the supercomputer and freeing Aelita from the virtual world.
The team destroys the supercomputer, effectively ending XANA's threat and integrating Aelita fully into the real world.
