When Bart discovers a badger has taken up residence in Santa's Little Helper's doghouse, Bart and Lisa try to lure him out. After consulting WhatBadgersEat.com and Homer, they decide to call animal control. Dialing the number, Homer runs into trouble when it turns out the area code for half of Springfield has been changed. After Phoney McRingRing and other executives fail to quell the town's fears, area code and class rivalries split Springfield in two. And when Homer becomes mayor of New Springfield, his plan to build a wall between the two towns doesn't solve any problems. The Who might be the only thing to bring the two towns together again.