Ghost hunters find film director's haunted mansion and anger the flesh-eating ghouls inside.

On a hiking trip in the Italian Alps, James discovers an ancient burial cave filled with gladiator artefacts. He becomes possessed by the spirit of Tyranus, a demon gladiator, and goes on a killing spree to revive the true spirit of Demonicus. A professor, Gina, and her students are to be the sacrifices to the demon Tyranus. Can they outwit Demonicus before becoming offerings to the evil god?

Smarmy opportunist filmmaker Worthy Milligan convinces traumatized sole survivor Tricia to work as a technical advisor on a film he's making about the horrific events that occurred at Camp Blood. The cast and crew return to the remote woodland area to shoot the picture. Of course, the murderous machete-wielding Clown also shows up to commit more brutal killings.