Pa shoots at and chases off the mailman and an insurance salesman. Ma tells Pa that he needs to stop doing that and that he has to promise to be nice to the next stranger that shows up and Pa agrees.
A circus truck is driving along a road not far away and a cage falls out. The circus chimpanzee jumps out and heads for the Rugg's home. He comes across another hillbilly and the hillbilly runs off and leaves his hat which the chimp puts on.
The chimp comes up to Pa and Pa tries to be friendly and the chimp plays a trick on him. Pa goes and grabs his gun and Ma reminds him of his promise and invites the chimp to supper. The chimp creates a lot of havoc and Pa keeps getting the worst of it.
The circus people show up and they thank the Ruggs for taking care of their chimp and give out free tickets to the circus. Pa loses it and chases them off with his rifle.