When Johnny Dixon, Professor Childermass, and Fergie Ferguson have a party for their friend Dr。 Coote, they expect the evening to be a blast - and it is! - but not quite the way they have in mind。 As Fergie pounds out a rhythm on a small drum, a howling wind shakes the house and something explodes。 Soon Johnny, the professor, and Fergie are in a battle with the fearsome Priests of the Midnight Blood for Dr。 Coote's life - and their own。