Rescued on his 18th birthday by half-giantess Ingrid from an unbearable life spent mostly under the fleshy buttocks of the huge and insufferable Lotta Bottomley, Peter Petter is astonished to find out that he is a wizard and has a place reserved for him at Fessewarts University for witches and wizards.  He is equally surprised to find that the clump of green hair just to the right of his genitals shaped exactly like a peacock is in fact the result of an early encounter with the dark wizard known as He-Who-Must-Never-Be-Sat-Upon.

Peter soon finds that the life of a wizard is far from being the as magical as he (or anyone else) might have supposed.  It becomes apparent even before he reaches the university that the wizarding community, particularly the women, have desires and preferences that are often not too dissimilar from those of Lotta Bottomley, and the courses he will study at Fessewarts are as much to improve his knowledge and abilities in the kinkier sexual practices as they are to develop his magical abilities.

With the help (and hindrance) of his friends Don Weenie and Herniame Grimwaite, Peter's particular skills soon surface, but there is evil lurking that threatens to overwhelm the wizarding tradition of female sexual dominance.  Whether it comes from the sad, shy girl Merry Shagger, direct descendant of the Mad Mistress of Mooning, or from the sinister, sadistic Professor Scrape, or whether He-Who-Must-Never-Be-Sat-Upon is about to return, no one knows.  Someone intends to steal the all-powerful Gallstone, and Peter is about to find out whether he can really trust anyone.

Hairy Peter and The Gallstone is an outrageous erotic parody that leaves little in other wizarding or in sexual domination novels untouched.  It is a highly erotic and exciting story in its own right, with a female domination theme and including BDSM, facesitting, frustration, denial, enforced chastity and forced orgasm among others.

It is also a love story.