An American family gathers to celebrate their 28-year-old daughter’s pregnancy, but the joyous occasion is disrupted by the unexpected arrival of Henrik Brandr, the leader of a Satanic cult. Henrik proposes a substantial sum of money to purchase their ranch, but Jacob Richardson, the father, declines the offer due to the land’s deep sentimental significance. Angered by the refusal, Henrik begins casting destructive curses on the Richardson family, attempting to drive them away, even resorting to murder. As they endure a series of inexplicable misfortunes, the Richardsons turn to Marybeth, a high priestess and white witch, for assistance. They uncover a dark secret about their home, explaining the cult’s intense interest in their property. Determined to defend their land, the family engages in a fierce struggle between the forces of good and evil.