Yumi, Jeremy and others in “Unfinished Business”

Hi. Find anything?

Yes. X.A.N.A.

X.A.N.A.? What's that?

A super dangerous program, like a virus that can control electricity and it activates towers on Lyoko to gain access to your world.

So the red tower, the electricity monster, the monsters on Lyoko- All of that was X.A.N.A.?

Yes. Only Aelita can counter it by deactivating the tower that it uses for attacks in the real world.

No, Jeremy. We better just shut his thing down.

Ulrich

Look, we know how to neutralize X.A.N.A. We just get Aelita to the activated tower.

And we can fight off the monsters while Einstein figures out a way to bring Aelita to Earth, right?

It's risky, but I think we should. After all, we are Lyoko warriors, aren't we?

All right. Don't forget about our pact, right?

Relax. We all know how to keep a secret.