To save Groosham Grange, the strange boarding school he attends where ghosts and ghouls rule the academy and students study witchcraft, David Eliot must win the Unholy Grail, a magical cup awarded to the star pupil.
David Eliot, who is on track to win the Unholy Grail, is subject to a series of suspicious accidents that threaten to award the cup of magical power to Vincent King, the new boy at Groosham Grange.