In the confines of their modest home, a Mormon teen girl and her elder brother find themselves alone, their parents out for the evening. The brother, newly returned from his mission, finds his sister's gaze lingering on him, filled with a hunger he doesn't quite understand. She approaches him, her hands shaking as she reaches for his belt. He freezes, torn between his duty to God and the desires of the flesh. She guides his hand under her skirt, showing him the dampness between her legs, the result of her own forbidden thoughts. As he fingers her, she moans softly, her head falling back, her hair cascading down her shoulders. When she can take no more, she turns, presenting her ass to him, and he slides into her, their bodies moving in a dance as old as time, as they both struggle to reconcile their actions with their beliefs.