Al helps Griff win a trip to Atlanta for the Olympic games by helping him answer questions on a radio sports quiz.

After Bart and Lisa inform Homer that his taste in music has become old, he decides to get into the current music scene and takes the kids to a music festival, Lalapalooza, where he accidentally discovers he has a talent for taking a canon ball to the gut. Soon Homer finds himself traveling with the festival and putting his health in danger as he continues performing his amazing feat for cheering crowds.

It is the last day of school and Lisa has no one to sign her yearbook; Bart on the other hand is quite popular. Flanders offers Homer his Little Pwagmattasquarmsettport beach house for a few days, since he has jury duty and won't be able to use it. Lisa worries about not having a friend to bring. Bart brings Milhouse, making Lisa feel depressed. Lisa decides not to bring any of her dorky things so that she can redefine her identity. She gets new clothes and searches for kids with whom to play. She finds a bunch of local kids that seem to like her for whom she is. To make her feel even more special, they reject Bart in favor of her, making Bart jealous. Meanwhile, Homer sets out to buy illegal fireworks. Lisa is acting exactly like Bart when she hangs out, infuriating Bart and he decides to sabotage her friendships. He shows them a yearbook, revealing her as a nerd. She is humiliated and angry with him. He feels bad, so he tries to win back her friends. Even though they've found out she is a nerd, it turns out that they don't mind and they all sign her yearbook.

An old friend of Peggy's comes to seduce Al and he plays along since he thinks it is one of Jefferson's practical jokes.