Thus this discussion. If there was a Season Five, what could we predict to actually have a chance of happening in the show?
Mind you, this is meant to be a conservative discussion. While one might like to predict that a sector-long serpant monster would appear (and given the Kolossus, it wouldn't be out of place), there is no evidence in the show to support that. While the writers have the luxury of making up what they please, us analysts don't.

So, a couple points I've come up with:
- So all the Replikas were destroyed. Big whoop. Note that Lyoko's destruction didn't do a thing to the Supercalculator- why should we believe that the computers behind the Replikas were destroyed?
- *And if XANA's not dead, it wouldn't be fair for Franz to be. And let's face it- people in Code Lyoko are not good at dying when they're supposed to.
*If XANA's gone for good, then the next-best plot hook is Project Carthage. Given how little we know, it's hard to tell how they'd fit in to the story at the moment.
- *As far as we can tell, they have no idea about Lyoko. Thus, to be decent villains, they'd need to be brought into contact with the group somehow. Best methods I can think of:
- *They discover the Replika computers (The only plausible explanation I can have for their all being abandoned would be an active coverup by XANA. And it's hard to conceal a robot army when you're dead.)
*Aelita remembers that she has two parents, and begins inquiring into Antea's fate.
*Something involving that girl from Iceland.
Other thoughts? Feedback?