Jeremy, Ulrich and others in “Unfinished Business”

Have you realized you nearly gave me a heart attack!?

Ulrich

Can someone tell me what happened?

Well, it seems that even if Aelita loses all of her life points, she won't disappear forever.

Ulrich

She won't? How come?

Of course! I was too dumb not to think of it before. Ever since you recovered your human memory, you're exactly the same as us. We don't need Code: Earth anymore to bring you in.

That'll really help now that X.A.N.A. is determined to destroy Lyoko to keep us from finding him on the net.

That's great, Aelita. You're a full-fledged Lyoko Warrior from now on.