Although Darrin suspects Endora of using magic to break up his marriage and ruin his reputation at work again, it is actually Samantha's distant cousin Edgar, an elf who has the power to become invisible.

The Stephens look after the Tate's baby while they are in London. When they return from the Tate's house with Jonathan, their baby, nosy old Gladys Kravitz finds Maurice and tells him that the baby has been born. Maurice then takes Jonathan, who he believes is his grandson, to a Warlock Club in London to teach him about witchcraft. After series of misunderstandings, Samantha clears everything up when she tells Maurice and Gladys that her baby is not due for a few months.

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.

In the second Halloween episode of the series, Endora turns Darrin into a werewolf when he refuses to let Samantha go to a witches Halloween ceremony. The worse part of it is, Darrin has to entertain a new client for McMann and Tate! Samantha tells Endora that she is acting like the witches stereotype, and Endora removes the spell.

Samantha sets up a play for a rest home to celebrate the end of the Civil War. As she writes, Endora brings her characters to life to help Sam out. Of course, nosy Gladys see all this and goes crazy, as usual. Sam suffers a writer's block near the end of writing, and her play characters lend a hand to tie up the loose ends.

Aunt Clara is embarrassed when an old boyfriend Hedley Partridge comes to see her. She is afraid that he will not talk to her because her magic is fading away, but she learns that he has the same problem, too.

Samantha and Darrin agree to babysit a young warlock boy named Merel. Once there, Merel is given the ultimate ground rule from Darrin: NO WITCHCRAFT! Merel keeps his end of the bargain until a burglar breaks in and ties both him and Darrin together. The burglar is after an expensive necklace that Larry gives Darrin to keep for Louise, and is conned by Darrin into taking a fire engine. As soon as the burglar take it, Darrin tells Merel to hit the magic and the burglar is scared off by Merel's powers.