A Light That Doesn’t Dim follows Sister Jones as she faces a life-altering decision. Torn between returning home and disappointing her devout Mormon family or continuing her missionary work in Mexico and sacrificing her own happiness, she grapples with intense familial and cultural pressures. The film explores themes of faith, identity, and the struggle to find one's true path, blending drama and horror to depict her emotional and psychological turmoil. Sister Jones must confront her deepest fears and desires to decide whether to adhere to her family's expectations or follow her own heart.