A year after Aunt Clara passed on, Esmerelda carries on her memory by being a bumbling witch as well. Esmerelda sneezes up a whole lot of trouble when Darrin has a prospective client over to look at ad layouts. Then, when she gets nervous, she fades out. Darrin uses Esmerelda's magical snafus to good use when he presents a unicorn as a design for the client's car company. Samantha tells Darrin that Esmerelda will only visit when she is called.

Esmerelda brings up the real Santa Claus and cannot get him back to the North Pole. So Samantha blinks up his elves and sleigh and reindeer, much to the horror of Gladys, who instantly reports all that she sees to Abner, who does not listen to her.

Esmerelda's magic seems to be all wrong and is a failure as a witch. Larry says that a client of his needs a babysitter for the evening and gets Esmerelda to do the job so he can sign the contracts to win the deal. Esmerelda shows the Norton's child, Ralph, some magic and No one believes him when he tells all about it. As a result, Esmerelda is fired and Larry loses the Norton account. So Samantha sets up a dinner party with Esmerelda as a magician. Once everything is cleared up, everyone gets what they wants: The Nortons are friends again and Larry wins the account.

Tabitha is working on a project on George Washington for school, and needs help. Esmerelda helps out, but accidentally conjures the real George Washington! Samantha tries to keep an eye on George, but he wanders off into the park where he is caught by a policeman. The policeman lets George go on a $2000 bail. As soon as Sam and Darrin bring George home, Esmerelda remembers the spell and sends George back, without his shoes! Esmerelda brings him back, but this time, he is joined by Martha Washington....

The Washingtons adjust to life in the twentieth century as they stay with the Stephens. Larry sees them both and decides that it is a great ad campaign for his new clients, the Whirlaway Washing Machine Company. George cannot tell a lie about the washer and, as a result, loses the account for Larry and Darrin. He does the same thing in the courtroom and his charges are dismissed. Then the Washingtons are finally send back to their own time.