Lincoln Loud and his friend Clyde discover an abandon factory with a super computer. When they turned it on, they meet a girl inside it woth pink hair named Aelita in a world called Lyoko. But what they didn't know was they unleashed an evil program. XANA. Now it's up to Lincoln, Clyde and Ronnie Anne to help Aelita get out of there and stop XANA from destroying the world.