Struggling with boredom and resentment, two siblings, Michelle and her stepbrother, find themselves alone together. Michelle retreats to the bathroom, fingers buried in her pussy, as her stepbrother's shower interrupts her. Caught in the act, she's embarrassed but intrigued by his accidental sighting of her curves. They argue, but later, Michelle propositions him, asking if he's ever thought about her like that. Naked, they masturbate in front of each other, Michelle's pussy glistening as she teases him with her fingers. Just as they're about to cross the line, a creaking floorboard stops them in their tracks.