All Available Season
All Season
Specials
First episode where they discover the factory.
Season 1
After discovering a parallel universe hidden inside a supercomputer, four students must stop a renegade virus from destroying the secret world.
Season 2
The Lyoko Warriors have their work cut out for them as XANA gains power, with an ability to possess humans and create even more mayhem on Earth.
Season 3
As Season 3 opens, XANA has escaped from the supercomputer and is bent on destroying Lyoko so that the Warriors will be unable to stop his evil plots.
Season 4
Jeremy and Aelita must rebuild a new Lyoko to replace the one XANA maliciously destroyed at the end of the third season.