With the time for their newest addition fast approaching, the Duncans start considering baby names. But amidst the commotion, Teddy is eager to find a quiet area to study and ace her final exam, while PJ discovers he has to complete a square dancing class in order to graduate. Meanwhile, with all the baby talk, Amy and Bob overhear Gabe tell Charlie about being a middle child, so they overcompensate by spending even more time with him.