Framed by testimony from Brigham Young (Terence Stamp), SEPTEMBER DAWN presents a fictionalized chronicle of the Mountain Meadows Massacre on Sept. 11, 1857 (an event long denied by the Church of Jesus Christ of Latter-Day Saints). Determined to lead his Mormon community against what he sees as the world's many corruptions, self-righteous (fictional) Bishop Jacob Samuelson (
Jon Voight) plans a murderous attack on a wagon train of some 120 Arkansans en route to California. The movie draws a clear line between the innocent travelers and the Mormons, depicted here as bloodthirsty religious extremists who are still angry over the 1844 murder of their founder, Joseph Smith (
Dean Cain). Samuelson is also angered by the apparent betrayal of his son Jonathan (Trent Ford), who holds his father responsible for his mother's death and also begins a romance with one of the wagon train travelers, Emily (Tamara Hope). Cagey Samuelson enlists local Paiute Indians to wage the initial assault on the wagon train. When some braves are killed, the Paiute leader backs out, so the saints have to do their own dirty work.