The film is told through the naive eyes of a diplomat’s young son, Phillipe, who idolises his best friend, the diplomat’s butler Baines. Baines has constructed a heroic persona, full of exotic adventures, that fascinates the boy.

Two Egyptologists, Professor Fuchs and Corbeck, are instrumental in unleashing unmitigated horror by bringing back to England the mummified body of Tara, the Egyptian Queen of Darkness. Fuchs’s daughter becomes involved in a series of macabre and terrifying incidents, powerless against the forces of darkness, directed by Corbeck, that are taking possession of her body and soul to fulfill the ancient prophesy that Queen Tara will be resurrected to continue her reign of unspeakable evil.