In the subplot, Bart is upset to learn that Milhouse failed to invite him to his birthday party. Milhouse reveals that his mother, Luann, thinks Bart is a bad influence and forbids the boys to be friends. Deprived of his best friend, a depressed Bart resorts to playing with Maggie. Marge visits Luann and persuades her to allow the boys to resume their friendship. Using the Krusty the Clown walkie-talkies Bart gave him for his birthday, Milhouse invites Bart to his house. Realizing no one else would, Bart thanks Marge for standing up for him.