An American family celebrates their 28-year-old daughter's pregnancy. The celebration is interrupted when a Satanic cult leader, Henrik Brandr, unexpectedly visits their ranch. Henrik offers to pay the family a large sum for ownership of their land. Jacob Richardson, the father, rejects the offer due to the priceless sentimental value of the ranch. Henrik, displeased, begins to put devastating curses on the Richardsons, trying to force them off their land - even if it means murdering them. After...