A curious brother and sister, left alone in the house, find themselves drawn to each other's bodies. She tentatively touches herself, moaning softly, while he watches, his cock hardening. Their eyes meet, and the dam breaks. He strokes his thick shaft, while she spreads her legs, fingers plunging into her wetness. They move together, their lust growing, until a creaking floorboard forces them apart, leaving them panting and wanting more.