Witch power is a phenomenon recognized to have existed for thousands of years. Its true origins lost in the distant past. The witches who survive today keep their existence hidden to remain useful to the continued development of the human species. With ages spanning centuries, some are now as old as the oldest trees, some older. Not that you would notice as they retain the physical appearance of youth.Grace Penny. Now five hundred years old looks no more than a mid-twenties something. As High Priestess of the White Coven Belfast. She has been the United Kingdom's northern protector against the mysterious supernatural black long enough to sense when an impending attack is imminent.Together with her sisters Venetia and Vienna they lock horns with disciples from the black as they attempt to gain a foothold in our dimension.