Samantha and Darrin's European vacation moves to Scotland, specifically Inverness, where they are staying at the small hotel owned by Darrin's cousin, Robbie. As with most locals, Robbie has a love/hate relationship with "Nessie", the Loch Ness Monster. They know that supposed sightings of Nessie brings in tourists - sightings which have been rare of late which means Robbie's hotel business is down - but would probably be frightened if they saw Nessie themselves. So when Robbie does spot a monstrous creature in the lake, he decides to call in a specialist, the Baron von Fuchs, to take photographs. In reality, the Baron wants to capture the monster for the $3 million insurance on its head. This news causes a problem for Samantha as she knows the monster is in reality a warlock named Bruce, an old, and very persistent wannabe beau of Serena's, she who turned him into the monster forty years ago to get him to stop bothering her, she choosing a monster as that's how she felt he was behaving. To save Bruce from the Baron, Samantha has to convince Serena to change Bruce back into a warlock. Serena believes Bruce has paid his penance, but she doesn't count on Bruce exacting some revenge of his own. As such, Samantha has to try to convince Bruce to remove the spell he places on Serena in turn. She may be able to do so with a little unwitting help from Robbie.
—Huggo