When Homer finds out the town is split into two zip codes, he won't stand for it. He soon realizes that the rich side of town gets to keep the old zip code, whole the other side has to get a new one. He decideds to split the town in half, New Springfield and Olde Springfield. Homer is now the mayor of New Springfield, and gets The Who to play. But the who won't play until Homer takes down the barrier between New and old Springfield to settle their differences.
I think this is a great episode. I loved the Homer getting attacked by the badger, and The Who guest starring.