With her husband working overtime, Samantha is bored and agrees to have lunch in Paris with Endora. She happens to run into Larry and Louise Tate while there, creating confusion and hard feelings between Samantha and Darrin. After some missed connections, Samantha and Darrin fly to Paris together.

Larry sees Louise and Samantha entering an obstetrician's office and assumes Darrin is about to become a father. It is actually Louise who is pregnant, but she is afraid to tell Larry. After Larry tells Darrin, he has a daydream about Samantha having "witch" children. When the four of them have dinner that night, the truth comes out.

Knowing that Darrin needs a new model for a campaign, Samantha turns a stray Siamese cat into an attractive woman named Ling Ling. Ling-Ling, who knows she's a cat brings those cat sensibilities to her human life, Wally starts to fall in love with her. Ling-Ling likes the attention she is receiving from Wally and wants to stay human. Samantha has to figure out how to tell Darrin the truth about Ling-Ling while she and Darrin try to persuade Wally that Ling-Ling is not the right woman for him.

Samantha and Darrin spend the night at a hotel and Samantha briefly changes her hair to brunette. Larry spots them and thinks Darrin is having an affair. Larry proceeds to tell Louise. Louise meets with Darrin at a hotel hoping to convince him to drop the other woman. Larry spots them and thinks Darrin's other woman is Louise.

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.

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.

Endora invites Darrin and Samantha to a wedding out of town, but Darrin is not sure that Larry will give him a day off. Endora thinks about turning Larry into an object, but thinks better of it when she asks Larry to let Darrin go. Endora learns that he is looking for a teddy bear for his son and she brings a teddy bear to his office. Darrin thinks the worst when he sees the teddy bear sitting in Larry's office, and after a series of misunderstandings, everything clears up when Larry actually walks in! It seems that Larry was out somewhere and Endora left the teddy bear in his office while he was out.

Darrin learns that the truth does not always set you free when he is bewitched by a statue placed under Endora's spell that makes everyone tell the truth.

The Stephens hire a maid named Naomi, who turns out to be a major klutz. Samantha helps her out magically when she messes up the dinner. The Tates think that she is a wonder and wants her to cater their dinner party. When Naomi makes a mess over at the Tates' house, Samantha pops up outside the window and helps her out again. By the end of the episode, it turns out that Naomi is a perfect accounting whiz and she is offered a job with McMann and Tate.

Darrin unknowingly gets three wishes from Endora. He blows the first two on fast elevators and bikini-clad girls, and he wishes that he was Larry for a day. He gets his wish and a whole lot of misunderstanding begins between Louise and the real Larry!

A silly incident at a party that could have been prevented breaks up Darrin and Larry's friendship and their job. It's up to Samantha to use her powers to set things right between them both.

The Stephens and the Tates go to a seminar where speaker Osgood Rightmire proclaims that witches do not exist. Samantha proves him wrong by setting up a few tricks for him, but he unknowingly gets her back by calling out a spell that makes her disappear and reappear voluntarily. Endora finds out that Osgood's power comes from a powerful ring on his finger. Endora grabs the ring and makes Samantha visible again.