The Simpsons' coax Maggie to say her first word. Homer tries in vain to get her to say "Daddy," but she only burps. Marge recalls Bart's first words, "aye carumba," and when Lisa asks what her first word was, Marge flashes back to 1983, when she first learned that she was pregnant with Lisa...

With a second baby on the way, Homer and Marge search for a bigger house. The year 1983 gives way to 1984, and the Summer Olympics begin. Krustyburger offers free burgers to customers who pick Olympic events won by the U.S. on their gamecards. However, the games included are ones that the Russians have traditionally won. When the Russians boycott the olympics, the Americans win every event, and Homer gets a steady supply of free Krusty burgers.

When Lisa finally arrives, Bart has a difficult time adjusting. Jealous of all the attention she is getting, he decides to run away. However, when Lisa toddles into his bedroom and says her first word--"Bart"--he changes his mind. Homer tries to get Lisa to say "Daddy," but she can only say "Homer." Back in the present, Homer carries Maggie up to bed, turns out the light, and leaves. Alone in her room, Maggie utters her first word: "Daddy."