A secretive, late-night knock on the bedroom door reveals a desperate, panting brother, his eyes wild with lust. His sister, awake and anxious, watches him enter, his massive erection tenting his pajama pants. "I can't sleep," he confesses, his voice ragged. "I keep thinking about... about what we found." She swallows hard, her heart pounding, as he approaches, his intent clear. She knows she should protest, but her body has other plans, aching for his touch, craving the taboo.