In a dark recess of a San Francisco mansion lies a supernatural power whose terrifying heart beats in the corpse of an Egyptian mummy. When seven savage rips are found on the arm of Dr. Trelawny as he lies in a coma, only his daughter (Amy Locane) and an Egyptologist (Louis Gossett, Jr.) can discover the truth behind a body that won't remain dead. Now, the powers of an ancient ritual ceremony must stop the mummy's quest to suck the lifeforce out of everyone in the house.