To celebrate Mr. Peepers' birthday, Wes decides to bake him a cake. Meanwhile, Nancy and Marge make a secret trip to the doctor and confirm their suspicions: Nancy is going to have a baby.

Aunt Lil is so thrilled to hear she will be a great-aunt that she takes some time off to visit Jefferson City and offer her congratulations. When there, she decides to stay a few days, and has Mrs. Gurney call her boss to say she's ill.