A good witch named Winnie, comes to be the live-in housekeeper for Thomas J. Harper (A Widower lawyer), and his three children. This comes at the request of the youngest son, Gene, for someone to help him with bowling.

The kids push T.J. into asking Winnie to accompany him to a wedding.Things go awry when T.J. and Winnie have difference of opinion about how Winnie should dress.

T.J. is representing a sexy young client whose 80 year old husband has just died. Her next husband she has decided is T.J. She causes him to mistrust Winnie, but Winnie won't be outdone. Winnie is the Chef at dinnertime and Truth Soup is on the menu, leading to hilarious results.

Jessie anxiously awaits a phone call, to see if her and her friend are excepted into an exclusive girl's club named the Debs. When her friend is accepted, and Jessie's not because they don't know who she is that well, her father suggests she throw a Halloween party to impress them. Winnie who hates Halloween, practices a magic trick on Jessie, accidentally makes her disappear (Winnie's powers get fouled up by amateurs on Halloween). When the ""Debs"" come over, Jessie, now being partially visible eavesdrops on the Debs, and finds out they'll accept her in the group for her cool house to throw parties in, and her hunky brother Robb. Knowing this she backs out of the group, especially when she sees how they snub others not in their group.

Rodger has his 16th birthday, and he bugs his dad for a vehicle, to the point where he suggest his dad buy the car for household chores and he and Winnie would split it. T.J. agrees, but Rodger is in for a surprise wen Winnie don't let him use the car at all.

Jessie has a date with a 16 year old. Winnie convinces T.J. to allow the date, but after arriving back early from Rob's idea of an ""X"" ellent film, Winnie discovers that the bowling date turned into a living room date, and that Jessie has a real problem on her hands.

Winnie imagines herself into the roll of ""Donna Reed"". But trying to be the perferct homemaker backfires when she reizes se is being used for her magic.

T.J. hires Winnie to be his secretary for a short time, just until he gets through with a major client's divorce settlement. Winnie learns however there s a chance for this divorcing couple (Florence Henderson and Robert Reed) to reconcile. She goes against her boss's orders and makes them realize they still love each other.

T.J. is stuck at a radio station all night due to a massive thunderstorm that has wiped out a bridge. In the meantime Winnie has discovered that the electrical storm has knocked out her powers. Gene is terrified. Winnie must somehow manage to get T.J. on the phone so that Gene will calm down.

One of Winnie's spells goes awry when she splits Rob into two personality's. One is very good and the other is pure evil. The worse part is she can't put them back together with magic. The evil Rob then insults one of T.J.'s colleagues who happens to be on he board of a college that Rodger is applying to. Chaos ensues.

Kevin. a warlock, who three hundred years ago was promised Winnie's hand in marriage. But Winnie didn't want to marry him, so her father came up with the idea to send him out on a quest, which he has now completed.

Winnie's sister comes to visits and falls for Rob. He tries to tell her what kind of a macho guy he is and agrees to go River Rafting with her, only he hadn't bargained on a magical trip to Niagara Falls! Winnie tries to explain to her sister that humans can die, but in doing so scares Rob t the point he won't leave the house.