A professor of geneology has come to town to get everybody mixed up on their family trees. We join Lum and Abner as they talk about the jumbled, intertwined families in town. Who is related to who? Lum thinks Professor Krenshaw is doing a world of good in town, but he’s more concerned in getting rid of the locked box he found. It can only be opened by an heir of the Hamstead clan.
Abner lets his imagination run a little wild, as he wants to put up little statues of all the newly discovered Hamsteads. Lum is relieved to hear that widow Abernathy is actually his aunt. Now he won’t have to worry about her chasing after him to get married any more.
Lum realizes that it’s impossible for the widow to be his aunt. Is he onto the fake geneologist? The professor is a nice fellow, so what is he up to? Why does he want to tell Lum how to run the Jot ‘Em Down store?Will grandpap, or Squire Skimp know anything? They have concerns of their own.