Kingdom of Hungary, 17th century. As she gets older, powerful Countess Erzsébet Báthory (1560-1614), blinded by the passion that she feels for a younger man, succumbs to the mad delusion that blood will keep her young and beautiful forever.

When Ann, husband George, and son Georgie arrive at their holiday home they are visited by a pair of polite and seemingly pleasant young men. Armed with deceptively sweet smiles and some golf clubs, they proceed to terrorize and torture the tight-knit clan, giving them until the next day to survive.