In the suffocating summer heat, Michelle and her stepbrother find themselves alone and restless. They initially pass the time by masturbating in secret, Michelle's fingers dancing over her slick pussy and ass, her brother's hand greedily stroking his throbbing cock. But when he catches her mid-act, their pent-up frustration boils over into a heated argument. Later, they make amends, their bodies aching with unfulfilled desire. Naked and vulnerable, Michelle's eyes widen as she takes in her stepbrother's massive, throbbing cock. As they begin to act on their taboo urges, a creaking floorboard outside the bathroom forces them to abruptly halt their steamy encounter.