Endora puts a spell on Darrin, making him agreeable to everything and everyone. Of course, this results in him getting fired from McMann and Tate. Samantha finds out about the spell and tells her mother to take it off.

Uncle Arthur's magic is going out of whack, and Dr. Bombay helps him out by giving him a pill. This pill, however, makes Arthur become anything he thinks off. After being transformed a few times, Samantha decides to take him outside for some air. Arthur states that he feels like Superman, and all of a sudden, he has a Superman suit and flies in the air! This cause major pandemonium in the neighborhood, and Samantha convinces Darrin and Larry that it is great campaign for a client they are working with.

Mr. Dinsdale, a handsome lady-killer client falls for Samantha because she looks like Serena. Samantha tries to get the whole thing straightened out, but it only results in Darrin losing his account. Dinsdale sees the truth for himself when Samantha and Serena come together.

Another boyfriend of Samantha is still chasing her. The boyfriend, Waldo, wants Samantha so badly that he blinks up his own Samantha and take her around town. Larry sees Waldo and his Samantha together and thinks that the Stephens are breaking up. Darrin finds out from Larry and he confronts Waldo, only to be turned into a crow. The real Samantha finds out as well and she demands that Waldo turn Darrin back. Then they explain to Larry that Serena was with Waldo at the time that he seen them.

The Witches Council wants to test out Adam to see if he is a warlock or a mortal. If he is a mortal, he wilh have to be taken away from the Stephens' household. Maurice helps Adam by giving him powers so that he will not be taken away. Adam is indeed normal, but he does have his own powers tucked away somewhere.

Serena visits Samantha because she is stripped of her powers. She then falls for Darrin's newest client Harrison Wilcott and decides to go out with him. Samantha tries to tell Wilcott that Serena is bad news, but Wilcott has fallen for Serena. So Samantha finds Countess Pirhana (who took away Serena's powers) and makes Wilcott fall in love with the Countess.

In the final episode, Endora tries to test out Darrin's honesty by giving him a pin with a spell that makes him tell the truth. Darrin learns that honesty is not exactly the best policy when he jeopardizes an important account. It seems as though he may have lost the account, but the client likes the honesty between Darrin and Larry and gives them a break. As the series ends, Samantha and Darrin tell each other how much they love each other, without the magic of the truth pin.