Elvira is travelling through the French countryside with her friend Genevieve, searching for the lost tomb of a medieval murderess and possible vampire, Countess Wandessa. They find a likely site in the castle of Waldemar Daninsky, who invites the women to stay as long as they like. As Waldemar shows Elvira the tomb that supposedly houses the countess, she accidentally causes the vampire to come back to life, hungrier than ever. Daninsky has a hidden secret of his own, but will it be enough to save the two girls from becoming Wandessa's next victims?
The body a teenage girl is discovered in a field of sunflowers. At the same time a travelling salesman watches the events unfold on television, whilst in the small village of Angosto the discovery of a prehistoric cave brings excitement and the arrival of an experienced geologist, his young fiancé and his assistant. The town police chief plans his retirement, while his deputy dreams of escaping the boredom of his marriage and his job... Through a series of shocking events, the lives of these people become entangled in a web of violence, betrayal and murder.