In a remote Cornish village, strange and unsettling events unfold as young inhabitants mysteriously die from a mysterious illness. Sir James Forbes, a renowned doctor, travels to the village with his daughter Sylvia to assist his former student, Dr. Peter Thompson, who is baffled by the unexplained deaths. Upon their arrival, they find the villagers deeply superstitious and the local Squire, Charles Clive Hamilton, behaving suspiciously. As Forbes and Thompson investigate, they discover that the churchyard is filled with empty graves and are confronted by unsettling, nightmarish occurrences.

Sir James and Dr. Thompson gradually uncover sinister rituals tied to ancient voodoo practices, linking the unnatural deaths to a greater malevolent force at play. Suspense builds as they realize that the dead are not resting peacefully but are being resurrected for nefarious purposes. Through tense confrontations and harrowing discoveries, they delve deeper into the heart of darkness that grips the village, racing against time to save Sylvia and the remaining villagers from a growing, horrific threat. The plot intricately weaves elements of horror and mystery, capturing a gripping tale of courage against sinister supernatural forces.