A skeptical husband convinces his wife to cease practicing witchcraft, and then experiences a decline in his career and an attack by a disgruntled student.

While the script's touch is notably lighter than in earlier film versions, verging on comedic in places, the story is basically the same.

Joshua Lightman does not believe that his wife Margaret's spells and hocus-pocus have been helping him, and makes her cease practising witchcraft.

This winged creature whose eyes shoot green flames chases Joshua's car and nearly kills him before Vivian destroys it via her magic.

Although Witches' Brew was not officially presented by the producing company as an adaptation of Fritz Leiber Jr.'s original story, Shorr's film was thought to "follow the general plot line of Burn, Witch, Burn".