After an argument while he is teaching her to drive, Darrin enrols Samantha in a driving school. The owner assigns his nervous brother-in-law Harold to teach her. Samantha gives Harold a little self confidence.

Need some amusement in your life? Call Uncle Arthur, or, in this case, don't call him. Uncle Arthur arrives playing practical jokes on Darrin and Endora while Samantha is trying to get these two antagonists to make up once and for all. After many hits and misses, Darrin needs Uncle Arthur's help in getting Endora back. This is the famous ""Yagazuzie Zim"" episode.

Endora and Uncle Arthur have a falling out over who is to live in a house across the street. Gladys wants to find out about the disappearing and reappearing house, much to Sam and Darrin's dismay!

While Endora throws a Halloween party, she and Uncle Arthur are still clashing over the house across the street, and Gladys is still dumbfounded.

Uncle Arthur's new flame, Aretha, is not happy about his practical jokes. To please her, his practical jokes are installed in the Stephens' home where all hell breaks loose. Samantha tells Arthur that Aretha isn't worth putting her and Darrin through a lot of trouble and he puts their house back to normal.