In seventeenth century England Lord Whitman wages unending war on what he sees as the ever-present scourge of witchcraft, and many local villagers have suffered at his hands. But one victim uses her occult powers to curse his family, enlisting unknowing help from one of the household.

在与挪威的战争中，苏格兰国王邓肯（Nicholas Selby 饰）的表弟麦克白暗示俊拔，被加封为爵士。早在授爵之前，麦克白（Jon Finch 饰）和同伙班柯（Martin Shaw 饰）就已从三个女巫那边听说他将加封并最终成为国王的预言。预言的实现勾起麦克白心底潜躲的愿看，随后他和夫人（Francesca Annis 饰）殛毙了来他城堡做客的国王，并嫁祸国王的侍从…