In July 1950, Ma and Pa Kettle come home after their fun and exciting trip to New York City only to find out that they're going to become grandparents. Tom's wife Kim is expecting a child. As Tom frets about the pregnancy, the whole Kettle household is happy with the family's newest addition. Right in the middle of their breakfast the Kettles receive a telegram delivered by Alvin, the Western Union delivery boy, from Jonathan and Elizabeth Parker (Kim's parents) declaring that they will soon arrive at the Kettle house to see the newborn.