In the throes of teenage boredom, a sister and brother turn to each other for release. She fingers her wet pussy, moaning softly, while he strokes his thick cock. Caught in the act, they argue, but the tension is too much. Later, they meet again, naked and eager. She takes in his massive dick, fantasizing about it filling her tight cunt. Just as they're about to fuck, a noise startles them, forcing them to freeze in their erotic encounter.