[Galvantula]

The only thing I'm absolutely sure will happen in this episode is Gen getting his ass kicked.

Other than that, it's fair game as to what happens next. For all we know Everyone, Space is Here could just be a flashback and Kain could get his unhappy ending with everyone that's in the Dark Nebula gone forever. Which would royally suck mind you as having such a dark ending to a light hearted series would be jarring to say the least.