In a small Mormon community in southern Utah, Jane Withersteen, a young, unmarried Mormon woman faces growing pressure to marry a local elder of her church. Elder Tull, a polygamist, already has two wives and seeks to marry Jane not just for her beauty, but to take control of the ranch her late father passed on to her.
Riders of the Purple Sage follows the story of Jane Withersteen, who is being persecuted and threatened by an influential religious leader. As Jane's situation becomes increasingly dire, she turns to a mysterious rider, Lassiter, for help. Lassiter is a gun-toting, silver-spurred avenger with a mission of his own. As the two set out on a journey of revenge and redemption, they form an unlikely bond and find themselves entangled in the dangerous politics of a western town.