Yumi, Jeremy and others in “Unfinished Business”

I see the tower, Jeremy.

Nice one, Ladies.

Hold on a second, Jeremy. Something feels weird. The digital sea seems to have risen all of a sudden.

Hey, you're right, Aelita. The digital sea is going way up. another one of X.A.N.A.'s tricks.

Do you mean Lyoko is going to be submerged and disappear forever?

No, it won't disappear. Lyoko's regions aren't affected by the digital sea. But it will get submerged unless I find can find a way to lower the sea level. Oh no! Monsters are heading at the chamber of the Heart of Lyoko! X.A.N.A. is trying to stop you from deactivating the tower, and from accessing Sector 5 by raising the level of the digital sea! And that's precisely how he plans to quietly wipe out Lyoko. You got to get to deactivate the tower before the digital sea swallows the Mountain Sector!

Too late. It's not accessible.