A strange statue (the Grinnygog), which fell off the back of a truck carrying stones of an old church for relocation, is discovered by a woman on her way home from the store.

The family who now has possession of the Grinnygog, in particular one small boy, begin to experience strange feelings of euphoria and a desire to participate in folk magic rituals.

The story eventually reveals that the three women are witches from England's 17th century who escaped a witch-hunt by somehow slipping through time into the modern age.

The Grinnygog, which was an image of the Horned God, had lain dormant until being removed from the church, when it summoned the witches to the present day.

This is possibly due to ongoing rights issues after the production company, TVS, dropped out of the ITV network in 1992 and subsequently went through a number of take-overs.