A crew on a remote construction site are plagued by a series of bizarre mishaps. As the incidents turn more and more savage, it becomes clear that the sole link to the deadly events - is a 50-ton bulldozer.

Following a car accident, a young woman wakes up with amnesia and must figure out why everyone around her is being murdered.

A couple, Maggie and Ben Porter, inherit an old farmhouse and move in, hoping to reinvigorate their marriage. When they learn the home was occupied long ago by a woman who was executed for practicing witchcraft, Maggie begins to have nightmares about her.

An artist is plagued by nightmares of a love triangle and murder. A psychic says the dream figure is his brother, a "troubled soul" from an ancient past life. Nearly born as his twin but miscarried, this past life rival now breaks through in nightmares in attempt to repeat history.

An artist grows distant from his new wife as an irrational fear of premature burial consumes him.