Kate is cleaning out the storage closet. She wants the family members to go through their belongings to see what can be thrown away. Uncle Joe thinks they should start an antiques business with the junk. Everyone is around to help except Betty Jo, who should have been on the afternoon Cannonball run from school. Floyd and Charlie tell Kate that they saw Betty Jo that morning. She was all made up and had a suitcase. It looked like she was about to run away to elope. Kate and the girls look for clues in Betty Jo's room. They find a notebook that leads them to believe that Betty Jo might be thinking of eloping with the new boy in town, Peter Latimer. Betty Jo is actually just coaching baseball to Peter were no one can see them. Kate visits Mrs. Latimer to tell her that their children have eloped. When Betty Jo and Peter come home, everyone finds out that they were worrying over nothing.