Milhouse moves away from town, and Bart comes to realize just how much his pathetic friend means to him. After a lot of moping, Bart comes to seek out friendship from an unlikely source: Lisa. As they start to hang out more, the siblings realize that they actually like each other's company...until Milhouse returns and the status quo is restored.
Meanwhile, Homer looks for innovative ways to drum up the money for an anniversary gift for Marge. He becomes a really adept panhandler, and earns enough to buy her diamond earrings.