牛仔詹姆斯·弗朗西斯通过捕捉霸王龙生活在紫禁城谷，并把它在墨西哥马戏团寻求名利。他的受害者，被称为Gwangi，结果有反感在公开被显示。另一部电影特色的雷·哈利豪森的停止动作特效人才。

为了避免无辜性命遭殃，德古拉的助手、曼斯特男爵的母亲把她的儿子禁锢起来。然而不知情的玛丽安却把他放了出来，使得曼斯特四处寻猎年轻女子。没多久，许多女学生都成了吸血鬼。现在只有钻研吸血鬼颇深的范海辛医生能阻止男爵与他的附庸们继续肆虐，避免有更多年轻女子沦为永不衰老的嗜血之躯。

Tabitha, once the placid, gentle and devoted pet, adopts all the characteristics of a ferocious, wild animal following the murder of her mistress. The three guilty people are all trapped by the cat's power and each will come to untimely deaths of horrific proportions without anyone being able to solve the mystery that surrounds their brutal death.

Anglo-Indian Victoria Jones seeks her true identity amid the chaos of the British withdrawal from India.