untill the end

Sooooo... I really wanted to do a Christmas ZADR but had a complete idea block. So I watched the episode "The Most Horrible Xmas Ever" for some inspiration, and... Voila!

So the story is that the Santa-suit-thing comes back after five years and starts to destroy the earth. The first thing it happens to destroy is Zims base, leaving him without weapons to defend himself with. So he heads over to Dib's house, knowing that he is the only hope. They work on new advanced weapons for weeks, and, as the Santa-suit-thing destroys other parts of the world, and eventually fall in love (cheesy right?). When they go to fight the Santa-suit-thing, it just eats their weapons and grows stronger, leaving them with only each other.