In this film Paul Naschy embodies the Roman general Agrippa Vipsanio in a fierce battle against the tribal leaders Cantabrians, Corocota. Fierce battles, gladiators fighting, adventure and intrigue in this film as in the Roman conquest of Hispania.
A gang of pirates rape the two sole survivors of a ship wreck. The violated girls are rescued by the strange inhabitants of a supposedly haunted island, where they are granted supernatural powers to strike revenge against the pirates.