Kirsten Lee, a nubile teen, finds herself in a heated battle of wills with her stepbrother. As they clash over family dynamics, Kirsten's body betrays her, her nipples hardening and pussy dampening with each argument. She’s drawn to his muscular frame and throbbing erection, which he makes no effort to hide. One day, as she showers, he bursts in, catching her naked. Instead of apologizing, he joins her, their bodies pressing together. Kirsten, despite her reservations, can't resist his massive cock, soon riding him with wild abandon.