Four children travel to the virtual world of Lyoko to battle against a sentient artificial intelligence named XANA, with a virtual human called Aelita.
After discovering a parallel universe hidden inside a supercomputer, four students must stop a renegade virus from destroying the secret world.
View EpisodesThe 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.
View EpisodesAs 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.
View EpisodesJeremy and Aelita must rebuild a new Lyoko to replace the one XANA maliciously destroyed at the end of the third season.
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