Honeymooning in Bavaria, the young couple become stranded and are forced to stay the night in the area. Doctor Ravna, owner of the impressive chateau that sits imposingly above the village, invites them to dinner that evening. Their association with Ravna and his charming, beautiful family is to prove disastrous as they become unwittingly embroiled with this family of vampires who seek to initiate them into their diabolical creed.

A team of scientists search for the origin and purpose of a mysterious capsule found on a building site.