When a series of unexplained vicious animal attacks strikes his community, Sheriff Jim Tanner and his assistant Barbara trace them back to a Dr. Hyde, a former military researcher whose government funding for a dinosaur cloning project was cut. When the Pentagon discovers Hyde obtained foreign backing to continue his experiments, they send in a strike team to save Tanner and Barbara and stop Hyde.
After she becomes stranded in a small town, a young woman discovers her arrival there was foretold a century earlier by the town's founding preacher and that she is an integral part of his impending - and terrifying - rebirth.
Seeking revenge for her husband's death, Ann ingratiates herself with the Garretts under the guise of a caring housekeeper. Once she gains their trust, Ann begins to wreak havoc upon the dysfunctional family. Seduction and malice are her weapons as she attempts to emotionally and sexually destroy them.
