Hey, thanks for your feedback!
Yes, as usual, time troubles caused a lot of the room for improvement, and apparently that includes conveying the connection to the theme.
It would be this: The aliens are stealing all the hot dogs from Earth, so we are fighting to prevent A World Without Hot Dogs! I had hoped that it would become clear from the intro text. I had a concept for an animation for the intro or title where you would literally see an alien ship "abducting" hot dogs from planet Earth but didn't manage to finish it.