The year is 1811 in an England where Wizards and Witches practice their magic and dragons carry the Royal Mail. In France, Napoleon Bonaparte turns to the Jongleur, an evil mage, to further his ambition of conquering the British Isles. It is up to a young English Witch and a French emigre Wizard to thwart the black magic of the Jongleur and his unholy allies of the Unselighe Court before they succeed in ridding Britain of white magic and magicians - and making the British Isles a conquered land.