In the flashback, Bart goes to his first day of school. He is sad because school is not going well for him. Homer and Marge go to the school's psychologist. While they are talking about Bart, the psychologist learns that Lisa is very smart. He tells them that they should care for Lisa's smart intelligence. They try to put Lisa in a private school, but it costs too much money. Their town then gets a very big heat wave. Homer tries to save some money to buy an air conditioner. Marge does not want Homer to buy one until they know how to help Lisa. At the school, Bart becomes friends with Milhouse Van Houten and other students because he is humorous. 