A horny teen sister and brother, left alone, can't resist their carnal desires. Michelle fingers her wetness, her moans echoing through the house. Caught in the act by her brother, she's embarrassed but intrigued by his evident arousal. They argue, but the tension's palpable. Soon, they're naked, Michelle admiring her brother's thick cock. She fantasizes about it filling her, and just as they're about to cross the line, a sudden intrusion halts their taboo tryst.