Whitney Wright, the naughty stepsister, finds herself alone at home with her stepbrother Robby Echo. As they lounge around, Whitney's mind wanders to forbidden thoughts, her eyes lingering on Robby's muscular physique. She starts to touch herself discreetly, but Robby catches her in the act. Instead of being angry, he's intrigued. They start to talk about their taboo desires, their voices hushed, hearts pounding. Whitney confesses her fantasy of being taken by her stepbrother, and Robby, unable to resist, decides to make her fantasy a reality.