The witches return to Lancre where Magrat quickly gets caught up in the preparations of her engagement to Verence, the King. When circles start appearing in crops and plants all over Granny Weatherwax Nanny Ogg are very concerned about the Lords and Ladies breaking back through into Lancre. A concern that become more pressing when they discover that a group of young witches has been going up to the stones at night to dance, borrowing power from the Lords and Ladies to play at being witches. Meanwhile some of the wizards from the university are on their way to Lancre for the wedding, Archchancellor Ridcully waxing poetic about a striking young woman he knew there in his youth. And a group of men from the village have been given a play to perform for the wedding entertainment that the find rather embarrassing.
Sir Terry weaves together plotlines and layers of meaning humourous thread and pun-derful rivets. AKA, this book, like all of his work, is great.